With the current trend that cities are becoming mega cities, and the price of physical space in the central business area of those mega cities are going up, I think there will be demand to shift white collar workspace to the virtual world.
400 USD is a low enough price compared to rent plus furniture, maintenance, etc..
On the software side there already exist Immersed VR and Virtual Desktop.
If they could increase the refresh rate such that the average people don't get motion sickness wearing it, while keeping this relatively low cost, I think it could disrupt how we work.