This is such nonsense. The new Batman game on VR has full motion and smooth turning. It's not on rails at all. Games have got better at reducing motion sickness, and players also adapt over time.
The many of us who get motion sickness have simply stopped bothering with VR. Since the market has shrunk anyway after the initial excitement, the few VR games left can afford to be less accessible.
Indeed. I put on any kind of VR helmet for more than 2 minutes and I'll be queasy and/or throw up outright. My level of motion sickness is maybe extreme... but i guess that definitely messes with the total addressable market.