It's really easy to start with Oculus SDK as it's already integrated into all major (and minor) game engines, such as Unreal/CryEngine/Unity3D. So, there's lots of people both indie and professionals who are already developing VR games (or porting existing ones). See http://www.riftenabled.com/admin/apps/

Also, there isn't market yet for VR games as consumer VR isn't yet available. Most developers are just experimenting and waiting for the final hardware.