Just to illustrate, this is what Sony wants you to pay 10-20$ for:
Those games are made on the exact same x86 architecture, on the exact same engines, during the exact same time period, there's nothing new/additional in them to justify the price hike. Because what do you get? 4K? 60FPS? This should be a given, you paid for more powerful console after all. Haptic feedback, adaptive triggers, tempest audio? Again, those are the console's features you already paid for.
Sony's policy makes the PS5 look like a PS4 Pro v2, where unless patched the games run exactly the same as on the base PS4 model from 2013, which simply doesn't make any sense at all. I can imagine such incompetence from the usual suspects like EA or Activision, but Sony should be the front-runner with their 1st party games and showing others how it's done, promoting their new console, and yet here we are with 3rd party devs doing way better job at handling cross-gen games. Really, we're not even 1 year into next-gen and they already tried to bump the price by 20$...