Cloud gaming. A lot of interesting things would happen if you just basically had a video terminal and the all the computation and rendering was happening <10 ms away.

Every game could in effect have their custom fixed configuration "game console" as hardware, instead of having to target the lowest common denominator of PC configurations or out of date console hardware.

Networked multiplayer games would be freed from targeting the slowest common denominator in net connections, and would instead have intra-datacenter levels of latency and bandwidth to game servers.

We would infact be enjoying this now if progress in deployed broadband speeds hadn't slowed to a crawl 10 or so years ago.