Sell first, then build

Founders reminder: the biggest mistake founders make isn’t a bad idea. It’s building for six months before anyone has paid a single euro to find out if the idea was ever wanted.

The order should be reversed. Sell first, then build!

Not “would you use this,” and not five thousand people on a waitlist, both of which cost nothing and mean nothing.

A landing page with a real price on it, fifty conversations with people who actually have the problem, and a deposit or pre-order request. Then you watch what actually happens instead of what people are polite enough to say.

If nobody pays, that is not failure, that is five hundred euros buying you what a wrong build would have cost in six months and six figures. Change the offer, change the market, change the problem, and test again. If people are willing to pay before the product is even finished, now you have something worth building.

This matters just as much when you are raising. Investors at pre-seed and seed are tired of hearing “the market is huge.” What moves them is evidence that a specific person needed this badly enough to pay for it before it existed. That is a stronger signal than any slide in the deck.

Don’t fall in love with your idea. Fall in love with testing it. The founders who win are rarely the ones who guessed the market correctly on the first try. They’re the ones who found out they were wrong faster and cheaper than everyone else.