They're porting shit to PC for one reason and one reason only.
Money.
All the "They're doing it to lure people to PS5!" and other mental gymnastics are nothing but cope. They probably saw what MS was doing and decided to try it out, and they already confirmed they made a ton off the HZD port. I suspect it's only going to accelerate and the vast majority of Playstation games will be ported and it'll get closer to day and date too. If they see their console sales start to completely tank, they may put the brakes on it but as of right now PS5 and XSX are still selling like hotcakes and are almost impossible to get.
Anyway, HFW just got confirmed to have a 60FPS mode on PS5, so that's good.