I never cared about the PC ports but I don't think they'd ever do it day one. Look at what Rockstar does,console version first then PC. They know people will double dip.
That's assuming every Sony game will sell 20+ million in their first years which is not guaranteed, specially with them selling less consoles than before due to ship shortage.
Look a Ratchet Rift Apart: Fantastic game, universally acclaimed, gorgeous looking from a great team, etc... PS5 Only.
As of June 2021, it sold 1.1 million copies. Even if they are between 2 and 3 million now, I think the idea of releasing day and date or 6 months later on PC will increasingly become necessary if they want to make the most money possible from every game.
Returnal sold 560.000 copies as of June 2021. I don't think this game is a system seller but it sure as hell deserved a bigger audience and sale number. I'm sure it will do well if it ever comes to PC but how much more could they have make if it was released simultaneously on PC? I think Sony will ask themself that question and test the idea at some point.