I sure hope so. I think one of the barriers may be the compatibility with a lot of the devices coming out in VR. For example, to build something for the Hololens, Unity3D is the only option. IIRC, for Oculus, the only OSS game engine that targets it is Torque3D. I'm not sure how much cooperation these engines need from the manufacturers to begin targeting them, but that can be hard for OSS projects to do.