My charitable answer would be it's hard to break the chicken and egg cycle. Not enough headsets -> game developers don't target the platform -> no demand to buy headsets without games.

I have to respect how much they were willing to invest to try and break the cycle; for now it seems the headset count at least is nontrivial enough to get at least a handful of appealing games. Time will tell if that continues I guess.

(I found kids love to play Yeeps Hide and Seek. I would never in a million years suspect that would be a successful game. It's an MMO, and it has an interesting mechanic of defaulting to voice comms, which ends up with the kids forming an ingroup that rejects anyone who sounds "grown up". There are also levers to deal with griefing behaviors. I think is a great way to filter out the usual internet boogeyman the "creepy perv" types.)