Search Ask HN threads, there are lots asking the same question and it looks like people do make useful stuff, it's just personal software not distributed to the public. I find that nice actually, because it's nice to make something just for yourself and is essentially what software is good for, solving your own problem.
Yup, that's a sentiment I wrote about last year: building software for personal use that doesn't need to scale
It's the 3d printing of software:
https://nichecraft.substack.com/p/3d-printed-software