VR might not yet be in mainstream due to high prices and lack of uses but the latter is changing fast. 3D modeling has always been pain in the ass, mouse and keyboard just can't mimic sculpting in level that could feel satisfying to the user. However with VR you can use your hands like you would naturally do in sculpting, I've seen several programs like Blocks from Google that try to make modeling more enjoyable, faster and easier but Gravity takes the cake with this trailer.
Now anyone could bring designs from their mind to the reality, as you can use 3D printers to print out objects you create in Gravity! Yes, we live "in the future". Can't wait to see what people come up with!