There is eventually a law of diminishing returns, especially when having to balance frame rate, resolution, textures, lighting, etc.
NES and SNES had tons of 60FPS games. N64 had very few 60FPS games, and some games ran below 30FPS. Ocarina of Time was more or less 20 FPS during most normal gameplay.
PS1/N64 until PS5/Xbox Series largely prioritized 30 FPS so the graphics could be nice at the time. PS5/Xbox Series has tons of 60 FPS games.
Early PS6 games probably won't look much better than PS5 and PS5 Pro visuals.
Lifetime Sales Predictions
Switch: 161 million (was 73 million, then 96 million, then 113 million, then 125 million, then 144 million, then 151 million, then 156 million)
PS5: 115 million (was 105 million) Xbox Series S/X: 40 million (was 60 million, then 67 million, then 57 million. then 48 million)
PS4: 120 mil (was 100 then 130 million, then 122 million) Xbox One: 51 mil (was 50 then 55 mil)
3DS: 75.5 mil (was 73, then 77 million)
"Let go your earthly tether, enter the void, empty and become wind." - Guru Laghima