I don't think anyone can say for certain when it will take off, if ever. I for one don't think that it will become big as it's just a gimmick. I believe that AR will do much better in the long run, as it has much more potential to be used in daily life. If VR can develop to the extent seen in the film 'Ready Player One' however, it might actually do well. We are of course very far from that, so I wouldn't keep my fingers crossed.