Hmmm? What games would I even get if Sony went 3rd party? Never found Naughty Dog games to be anything more than ok. God of War paled in comparison to Bayonetta. Horizon is a fine game, but I'd probably wait for it drop in price plus a sale. Bloodborne is excelent, but is precisely the kind of game I don't have time or patience for now that I'm working for a living.
The main benefit for me would probably be that more of the big 3rd party games would come to Nintendo systems, but even then they'd also be on PC like they are now. I've never found any of Sony's first party offerings which I've tried to be anything better than average.