Do something that is too hard for you and you can't achieve in it - this is how you stay poor, hahaha.

Big, broad apps like SaaS, big studio software - leave it to tech companies.
For yourself do websites, landing pages, good, micro-targeted funnels. Good stuff for you.
Maybe 1 indie game, but I'm not sure about this one. It's more like a hobby.
Micro-entrepreneurship hehe.