There are some people for whom growing a business is the exciting part. They can get excited about tax prep software if they see the opportunity.
I'm more like you (not one of those people). If I don't care about the problem, and (maybe more importantly) the users I'm solving it for, I won't solve it well.
Another point - not everything has to be a business - you can always work your day job and build adventure games on nights and weekends purely for fun.
Sometimes the best businesses come out of hobby projects. If not, whatever - it's fun and fulfilling.
The best way imo to break this, is to build a bunch of small things that individually work but collectively point to and solve a more difficult problem. Kaleido.ai is a good example of this, they have created remove.bg and unscreen as individual products but are building something full-fledged.
I'm doing the same with CAD tools for Architects.
I started building https://cadcheck.xyz which brings me slightly closer to a larger solution that would be nearly impossible to build without VC funding.
Not sure if this fits your description, but the first thing that comes to mind are the tidyverse packages
Which one is it then?