So far, 99% of sales are in the "expensive gaming accessory" category. There is fun and interesting UI and gameplay innovation happening here.
The one non-gaming thing everyone seems to want is just a large virtual desktop workspace. Apple has probably come closest here. It sounds like an easy problem but without a high resolution and a wide field of view, it's not a good experience.
In the web performance space, there's some interesting stuff happening in origin trails around shared dictionary compression. It has been tried and failed before but the latest iteration/spec hopefully improved those shortfalls that made them unusable. Also, ZSTD compression has taken the crown from brotli.
Metas new AR glasses seem to be approaching the ideal hardware, IMO it's still searching for its killer app. Microsoft exited the AR space by killing hololens.
Startup space is dying right now, with very low VC risk tolerance / interest. Some funds have returned money to investors rather than risk it in investing.