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Growth can make a startup look healthy.
More website visitors, new account registrations, rising app downloads, and increasing customer numbers all appear to show that a company is moving in the right direction.
But where that growth comes from matters.
If customers are arriving because a startup is continuously paying to reach them, the numbers may say more about the size of its advertising budget than the strength of its product.
Andy Rachleff, co-founder and CEO of Wealthfront, believes paid user acquisition can distract founders from one of the most important questions they need to answer:
Does the market genuinely want the product?
According to Rachleff, startups should look for exponential organic growth—the kind of growth that happens when customers discover a product, enjoy using it, and recommend it to other people.
“The only way you drive exponential organic growth is through word of mouth.”
For founders across the startup ecosystem in Canada, his advice is a reminder that early growth should not simply be impressive. It should provide honest evidence that the product is solving a meaningful problem.
Advertising Can Create the Appearance of Demand
Paid advertising is not automatically a bad strategy.
It can help an established company reach new audiences, introduce a proven product to a new market, or accelerate a business that already understands its customers.
The danger appears when an early-stage startup uses advertising before it knows whether people truly value what it has built.
A company can spend money on search ads, social media campaigns, influencer partnerships, or promotional offers and quickly attract a large number of users.
The dashboard begins moving upward. The team celebrates. Investors may be impressed by the growth.
But what happens when the advertising stops?
If sign-ups immediately disappear, customers do not return, and few users recommend the product, the company may not have discovered product/market fit. It may have simply purchased temporary attention.
Rachleff warns that advertising can make founders believe the business is performing well when they are actually paying for every new customer.
This makes it harder to understand whether the product itself is creating demand.
What Product/Market Fit Really Looks Like
Product/market fit happens when a company has built something that satisfies a strong market need.
Customers do not simply try the product because they saw an advertisement. They continue using it because it delivers meaningful value.
They may also recommend it to colleagues, friends, or other people experiencing the same problem.
Rachleff believes exponential organic growth is one of the clearest signs that this is happening.
Organic growth can come from customer recommendations, product invitations, online discussions, community referrals, positive reviews, or people naturally sharing their experience.
The important point is that the company is not paying for each new user.
One satisfied customer leads to another. That customer introduces someone else. Over time, growth begins building on itself.
This is different from linear paid acquisition, where the company must continue spending money to maintain the same flow of customers.
When growth depends entirely on advertising, every new user has a direct cost. When growth comes through word of mouth, the product itself becomes part of the company’s distribution strategy.
“You Can’t See the Rocks Until You Drain the Water”
Rachleff uses a Japanese manufacturing saying to explain the problem:
“You can’t see the rocks until you drain the water.”
In this comparison, advertising is the water.
As long as a startup continues paying to bring in customers, it may be difficult to see the underlying problems in the product.
Perhaps users do not understand the onboarding process. Maybe the product solves a problem people do not consider urgent. Customers may try it once but see no reason to return. The experience might be useful but not memorable enough to recommend.
Advertising can temporarily cover these weaknesses by continuously replacing inactive users with new ones.
Removing or reducing paid acquisition drains the water.
The startup can then see what remains.
Are customers still joining?
Are existing users returning?
Are they inviting or recommending others?
Is organic growth improving over time?
These answers can be uncomfortable, but they give the leadership team more useful information than a paid campaign that creates attractive numbers without lasting demand.
Paid Growth Can Delay Important Product Decisions
When a startup is not growing organically, founders need to understand why.
They may need to speak with customers, improve the product, narrow the target market, change their positioning, or reconsider the problem they are trying to solve.
Paid advertising can delay those conversations.
As long as new customers continue arriving, the team may assume that growth is the main challenge. They increase the advertising budget instead of investigating whether the product is valuable enough.
This can lead to a dangerous cycle.
The company spends more to acquire users. Many of those users leave. The team then spends even more to replace them.
From the outside, the startup may appear active and growing. Internally, it is becoming increasingly dependent on paid acquisition.
Eventually, the cost of acquiring customers may become greater than the value those customers generate.
By that point, the startup may have spent significant time and money scaling a product that was never ready to scale.
Word of Mouth Begins With a Great Product
Rachleff argues that great companies are built through word of mouth and great products.
This sounds simple, but convincing customers to recommend a product is difficult.
People rarely talk about products that are merely acceptable. A service can function correctly, solve a problem, and still fail to inspire a recommendation.
Word of mouth usually begins when the experience is noticeably better than expected.
The product may save customers a surprising amount of time. It may simplify a complicated process, remove an expensive frustration, or make a difficult task feel effortless.
Customers share products when the experience gives them something worth talking about.
This is why product quality and distribution are not always separate.
For many successful startups, a remarkable product becomes the most effective marketing channel.
Every delighted customer can introduce the company to another potential customer. Each positive experience strengthens trust in a way that an advertisement often cannot.
“Delight Is the Greatest Form of Virality”
Instead of prioritizing advertising, Rachleff has chosen to invest heavily in creating a product that delights customers.
“Delight is the greatest form of virality.”
Customer delight goes beyond basic satisfaction.
A satisfied customer may continue using the product. A delighted customer is more likely to mention it, recommend it, write about it, or encourage others to try it.
That difference can become a powerful source of growth.
Delight does not always require dramatic features or expensive surprises. It can come from removing friction in the right places.
A product may feel delightful because it is unusually easy to use, responds faster than expected, provides clear communication, or solves an annoying problem with very little effort.
For founders, this means paying close attention to the complete customer experience.
Where do users become confused?
Which steps take too long?
What causes them to stop using the product?
Which moments make them feel that the product understands their needs?
Improving these details can produce more lasting growth than increasing an advertising budget.
What Startup Founders Can Learn From Rachleff’s Advice
For startup founders in Canada, Rachleff’s perspective offers a useful way to evaluate early growth.
Separate paid growth from organic growth
Do not report all customer acquisition as one number. Track how many users arrive through advertising, referrals, direct searches, recommendations, and unpaid channels.
This makes it easier to understand whether awareness is growing naturally.
Measure retention, not only sign-ups
A large number of registrations means little if customers immediately leave.
Founders should examine whether people return, continue using the product, and receive enough value to make the product part of their routine.
Ask customers why they recommend the product
When referrals happen, understand what caused them.
Was it a particular feature, a strong customer-service experience, a faster process, or a result the customer could not achieve elsewhere?
These answers show where the product is creating genuine delight.
Reduce advertising during testing periods
Temporarily reducing paid acquisition can reveal whether a startup has created independent demand.
If growth completely stops, the team has learned something important. The next investment may need to be in the product rather than promotion.
Improve the customer experience before scaling
Advertising increases the number of people who experience the product. It does not fix the experience itself.
Driving more users toward a confusing or disappointing product can create negative reviews and damage the company’s reputation.
Use founder communities for honest feedback
A strong founder network in Canada can help entrepreneurs distinguish between encouraging metrics and meaningful evidence of product/market fit.
Experienced founders, operators, and investors can challenge assumptions, review retention patterns, and identify when paid growth is hiding a deeper product problem.
The most useful startup support for founders provides honest feedback, not simply encouragement to spend more and grow faster.
When Advertising Does Make Sense
Rachleff’s argument does not mean startups should avoid advertising forever.
Paid acquisition can become valuable once the company has evidence that customers love the product, continue using it, and recommend it to others.
At that stage, advertising may help the startup reach more of the right customers.
The order matters.
First, the company needs to understand who receives the most value from the product. It needs strong retention, clear positioning, and confidence that new customers will have a positive experience.
Then paid marketing can amplify something that is already working.
Advertising is most effective as an accelerator, not as a substitute for product/market fit.
Before increasing its marketing budget, a startup should be able to answer:
Who is the ideal customer?
Why do they choose this product?
Why do they continue using it?
How much value does each customer generate?
How many customers arrive through referrals or organic channels?
Without clear answers, advertising may increase activity without creating a stronger business.
Why This Matters to the Startup Ecosystem in Canada
Canada’s startup community includes companies competing for attention across artificial intelligence, financial technology, healthcare, consumer products, software, and many other industries.
In crowded markets, advertising can feel like the fastest way to stand out.
But sustainable startup growth cannot depend only on who is willing to spend the most.
A strong startup ecosystem Canada can support is one where founders build products that customers genuinely value and willingly recommend.
Entrepreneur support in Canada should therefore help startups understand retention, customer behaviour, product quality, and organic demand—not just campaign performance.
Paid marketing can produce a visible spike in growth.
A delightful product can produce something much more valuable: customers who stay, trust the company, and bring other people with them.
That is the difference between purchasing attention and earning demand.
For early-stage founders, draining the water may initially reveal uncomfortable problems. But those problems are exactly what the company needs to see.
Only then can the team improve the product, create genuine customer delight, and build growth that continues even after the advertising stops.
