There was also a long history of PDAs being commercial failures. I'm not saying that Facebook will succeed there. But in the past VR was a failure because tech

There was also a long history of PDAs being commercial failures. I'm not saying that Facebook will succeed there. But in the past VR was a failure because tech was just not ready. Is it ready now? Maybe. Will it fail? Maybe. But past failures will have nothing to do with future ones.