Got rid of my Xbox and PS5 as I was sick of having to pay out for subs (PSN/XBL) so I'll gladly take any of the PS5 games that Sony offer on PC, even if we have to wait a while.
They invest into developing a game and get all the sales within their own game store, plus the exclusivity boosts the sales of the console itself and next titles in the franchise. Then, after all this effort and cost is long gone, they get to invest minimal effort to sell and hype the same game all over again to another audience and, again, try to hook these players into the franchise perhaps even selling a console to them. There are no downsides, only extra money.