I just don’t understand how does it work. Like where do you find such people? How do you make them beg you? Isn’t building in a saturated market kind of proves that there is demand?

the begging thing is a bit of a myth imo. what it actually looks like is you describe the problem out loud to someone and they go , god yes that's exactly it - before you've even mentioned a solution. that reaction is the signal. you're not manufacturing demand you're just finding where it already exists. the hardest part is you need to talk to a lot of people before you find that reaction, that was the biggest pitfall i fell into during my first startup. trying hard not to make the same mistake twice, youve to be really mindful

If you cant find the people, may not be the right market for you :) ideally you are exposed to target market directly, and daily. Or you team up with a cofounder who is. Re: building in saturated market - “prove” is a strong word. It’s another signal. And you can judge for yourself how strong :) i dont think anything can replace direct customer feedback

> kind of proves that there is demand?

It proves that there's demand but you might not get a piece of the cake. That's being able to sell/speak to the people in your market is so important