Simple because PS Exclusives are usually excellent games and it is a huge incentive to buy a console to play them all. They release a ton of exclusives for the PSX, PS2, PS3, PS4 & most are rated M & even the ones that are rated E are amazing too!
https://www.youtube.com/watch?v=mAobb8_SzHY
PSN: TaMpA_bLaCk