I have a PS4, so I'm not disappointed.
Also, if they're releasing it for the PS4, and also on the goddamn Switch, it's only a matter of time before they release it for the PC and the new consoles as well.
The thing about Rockstar is that they want you to buy their products on as many systems that you have. There's not that many people who own both the PS4 and the Switch, but there's plenty of people who own a PS4 and a PC or a Switch and a PC. All those people could be milked twice, if you don't release your game on all the systems at once.