[makeee]

I think you can validate a market exists by talking to people and looking at existing products, but you can't validate product market fit without building the product and seeing if people will pay.

I built a dev tool that helps people jump-start React development projects (think boilerplate, but way more customizable). As soon as it hit $2k/month, where I could barely live off the revenue, I felt that was product market fit for me. It was solving a problem for some amount of people and I could continue to work on it full-time. Now doing ~$6k/month.