> sacrificing time I’ve previously spent on other interests

I'd say this is the crux of the matter. Having competing interests and choosing what to do and how much of it is a balancing act, but you can still get that desired satisfaction. You could perhaps even start your own company if it's that important to you.

For me, projects just keep accumulating regardless of how much time I dedicate to them (outside of the mandatory things). Maybe I just have too many things I'd like to build. Definitely thinking about starting a company myself now there's all this capability available.