Filter out the remakes and what diversity have you got? It's a lot of shooters and action games, with the perennial racer. The 'Sackboy' game took a completely new, imaginative game - LBP - that reached a huge audience of all ages, and just recycled the IP into a standard platformer. What are the risk games? What are the low-return, artsy titles? Or the family pleasers? PS2 was made pink and sold to girls on SingStar - what's the equivalent for PS5 for girls who aren't into online shooters? They remade ICO - that was boundary pushing in 2001 but barely sold, but Sony made it and released it anyway. Now the closest they can get to that pioneering spirit on PS5 is a remake of an old idea.
Sony have left diversity to the third parties. They aren't risk-takers any more. But that's kinda true of all creative industries I guess. Much more doubling down on proven ideas and IP recycling. It's left to the indies to take the risks themselves.