The moment a startup stops pushing and the market starts pulling

Ask any investor what kills most startups and you'll rarely hear "bad code" or "tough competitors." The real assassin is building something nobody actually wants. The antidote has a name: product-market fit — the point where you've made something a specific group of people need so badly they'll happily pay for it, use it repeatedly, and tell their friends.

Investor Marc Andreessen, who popularized the phrase, described the feeling vividly: before fit, you're pushing — begging for meetings, chasing press, watching users trickle in and leak out. After fit, the market pulls the product out of your hands. Usage grows faster than you can add servers, money piles up, and you're frantically hiring just to keep up. If you have to ask whether you have it, Andreessen argued, you don't.

Because it's a feeling, founders look for proxy signals instead: customers who'd be "very disappointed" if the product vanished, strong retention (people coming back week after week), organic word-of-mouth, and shrinking effort to close each new sale. The danger is chasing growth before fit — pouring money into ads to fill a bucket that leaks, which just burns cash faster.

The practical lesson: your first job isn't scaling, hiring, or fundraising. It's relentlessly iterating — often through pivots and constant customer conversations — until you find the one thing a real market can't live without.