* Many people are getting sick. They don't even know why it's happening; we're years away from it being fixed. VR right now is the 3d on the 3ds. It's not meant for human eyes and they're rushing it.
* No eyetracking. Your camera focuses on the direction your head is pointed. This is not how humans see. I am virtually never looking the exact direction my head is pointed. This is one of the reasons people are getting sick. Their eyes want to focus on something, and that technology is VirtualBoy level underdeveloped.
* Ouya games. The vast majority of games right now are really bad. They're definitely working on getting real games into VR, but it's going to take time, and most developers will see it as a Vita type situation where it makes more sense to wait to see if people buy it before investing developer hours into implementing an entire different display method for the game. Right now VR companies are paying people to make them games. That money will dry up.
* Price. Most people can't justify spending $300 on a video game console they can hook up to their TV. The market for a $500 head TV for that $300 console (or a $1000 computer) is comically small.
* Version. It's too easy to wait for the next one. At some point they'll make a headset with eyetracking, that doesn't make people sick, that has 4k in each eye, that weighs less, that attaches to your head more comfortably, and it will cost less.
* VersionS. Right now it looks like certain games won't work on every headset. This immediately tells consumers to wait for standardization. It's a fucking monitor. You don't get to have exclusives for your monitor.
* FOV. Human FOV is around 180. We have binocular vision for 114 of that. Oculus and Vive fovs are at 110. That's literally horse blinders.
As an aside, I like moving my focus with my mouse. It's incomparably more accurate than hoping my deviated septim is pointing exactly where I want to look. If you can't disable headtracking that's an immediate red flag for me.
I really like VR, but (like basic income) it is going to lose credibility because of how early it is proposed.