PC is typically easier to develop for because of the lack of strict (and frequently silly) platform requirements. Which typically makes game development more expensive and slow than it needs to be when just targeting PC. If that barrier to entry was reduced to that of PC, you'd see a lot more games on there from smaller developers.

With current gen consoles, pretty much every game starts as a PC game already, because thats where the development and testing happens.

Rockstar here is the exception in that they are intentionally skipping PC - something that should be well within reach of a company their size while clearly being capable of doing so.

If another AAA game comes out with only PC support I'll be right there with you - but most game developers with the capability release for all major platforms now. But not the small console indie studio called Rockstar Games it seems.