I don't credit sony for my enjoyment of ps1 and ps2 software as much as I would say for Sega with Genesis or Nintendo with SNES. For nearly all of PS1 and the first half of PS2 my key enjoyment was third party titles.
i don't like sony's games, but i'm still thankful for what i played on my ps1 and ps2. it's not like you can say for sure what would and wouldn't have happened if they didn't exist.Saturn probably would have been #1 in Japan oddly.