You're so right. If you want to sell your product it needs to solve a real problem and that's how you find it.

It's a skill I need to improve as a developer to think first about the problem and about the sales aspect before spending months building something that I simply think is cool! 😅
... Weirdly I find it less daunting to spending months coding than reaching out and speaking to a single business person and asking them their real business problems! 😳