Will Xbox Series X and Playstation 5 big the biggest leap gaming has yet to see?

[HoloDust]

Not even close. Factoring out 2D to 3D as paradigm shift, PS1 to OG Xbox is biggest 3D leap so far.
Next paradigm shift would be fully volumetric worlds with fine enough resolution, that's maybe next gen if raw processing power jumps another 6-8x..