I also think that VR market will grow fast soon. As many said, in the following 2 years VR will probably be more present and a lot of people will use it, like blockchain I think. Mark.Space have some time to developp something big.
We have time, these kind of projects, vive, descentraland, mark.space, are in a good place and time to becomes the next thing of VR to become mainstream, because it will join an economy, not just entertaiment, so we can expect these project o success in the long term.