The Myth called TAM

One of the first questions every founder learns to answer is, "What's your Total Addressable Market (TAM)?" Investors ask it. Pitch deck templates have a dedicated slide for it. Accelerators expect it. Before long, founders begin to believe that a bigger TAM automatically means a bigger opportunity.

It makes for a compelling story.

"This is a $50 billion market."

"There are 20 million potential users."

"The industry is growing at 30% annually."

While these numbers may look impressive on a pitch deck, they rarely answer the question that ultimately determines whether a business survives:

Is anyone willing to pay for what you've built?

At Malpani Ventures, we don't ignore market size. A company solving a niche problem in a shrinking market will eventually hit a ceiling. But we've found that founders often spend far more time estimating hypothetical customers than understanding real ones.

A large market has never guaranteed a successful business. History is full of startups that entered enormous industries but failed because they couldn't convince enough customers to part with their money. On the other hand, some of India's most successful B2B companies began by solving a very specific problem for a very specific customer.

Take Chargebee. Subscription billing isn't the largest software category in the world. The founders didn't begin by trying to serve every business with recurring revenue. They focused on one painful operational problem faced by SaaS companies—managing subscriptions, billing and recurring payments. By becoming indispensable to that niche, they built a global SaaS company serving thousands of businesses across the world. Their market expanded because they first earned the trust of paying customers.

Another example is Locus. Logistics is a massive industry with countless inefficiencies. Instead of attempting to digitize the entire supply chain, Locus focused on route optimization and dispatch planning for enterprises. Their customers didn't buy sophisticated algorithms—they bought lower delivery costs, improved fleet utilization and faster deliveries. By solving one expensive problem exceptionally well, Locus earned the right to expand into a broader logistics platform.

The common thread isn't that these companies identified the biggest market. It's that they identified customers with problems significant enough to justify paying for a solution.

When founders tell us they're targeting "all manufacturers in India" or "every SME in Southeast Asia," our next question is usually much simpler:

Who is your ideal customer today?

More importantly, how many of them have you spoken to? How many have agreed to run a pilot? How many are paying? How many renewed after the first contract?

Those answers tell us far more about the business than any market research report ever could. There's a tendency to confuse market size with market opportunity. They are not the same.

A market may be worth thousands of crores, but if your product only solves a minor inconvenience, customers won't switch. Likewise, a relatively small market can produce an exceptional business if the problem is mission-critical and your solution delivers measurable value.

This is why we encourage founders to think from the bottom up rather than the top down. Instead of saying, "Our market is worth ₹20,000 crore," tell us how many companies fit your Ideal Customer Profile. Tell us how you built your prospect list, how many meetings you've had, what objections customers raised, how many converted into paying customers and why they chose you over existing alternatives or even over doing nothing.

That tells us much more about your business than a Gartner or McKinsey report ever will.

We've also seen founders become distracted by the allure of a larger TAM.

A healthcare software company starts selling to hospitals, then diagnostic labs, then insurance companies, then pharmaceutical firms because every adjacent segment appears attractive. A SaaS company tries to serve startups, mid-market businesses and Fortune 500 enterprises simultaneously because every segment represents additional revenue.

The result is usually the same.

The product becomes broader. The messaging becomes generic. Sales cycles become longer. Product priorities become conflicted. Engineering spends more time building custom features than improving the core product.

Ironically, companies often grow faster by saying no.

One of the best examples of this is Perfios. The company started by solving a specific problem around financial data aggregation and analysis for banks and financial institutions. Rather than expanding into every adjacent fintech opportunity, it built deep expertise within one workflow. That credibility allowed it to gradually become a broader financial infrastructure platform used by banks, NBFCs and insurers across multiple markets.

Focus came before scale.

This is a pattern we've observed repeatedly. The businesses that eventually become category leaders rarely start by trying to serve everyone. They become indispensable to a narrow customer segment before expanding into adjacent opportunities. Deep customer understanding creates a better product. A better product creates stronger references. Strong references create repeatable sales. Scale is often the outcome—not the starting point.

Investors ask about TAM because they want to understand the eventual size of the opportunity. That's a fair question.

But founders have a different challenge.

Their first job isn't to conquer a billion-dollar market.

It's to convince one customer to pay. Then ten. Then a hundred.

If those customers continue to buy, renew and recommend the product to others, you've built something far more valuable than an impressive market-sizing slide.

One of the most common mistakes we see is founders trying to convince us that there are one million potential customers.

We'd rather know why the first hundred cannot live without your product.

At Malpani Ventures, we'd much rather meet a founder with twenty delighted, paying customers than one with a beautifully designed TAM slide and no revenue.

The flow:
> Customers validate assumptions.
> Revenue validates customers.
> Repeat customers validate businesses.
> Markets create possibilities.

As we like to say it, Paying customers create companies