Seriously don't sweat it. The important part of Oculus is already done. The fact that you feel this way is the proof. Sometimes the most important part of a technology is just letting everyone know its possible. Before Oculus it was kind of a given that there was just too much lag for anything like it to be possible for the foreseeable future. It took a master of the 3d world-building craft to step up and say that this was untrue.

Now we know what we want and that its completely possible. If facebook is unwilling to to give us immersive 3d minecraft, someone else will step up. Because they know that they can.