Even if the sickness issue is solved at some point I just don’t ever see VR become a dominant way to game. There are just too many downsides.
Story-focussed games can not direct you where to look. You are completely cut off from the world so you can’t e.g. watch a child or elderly relative while you use it or chat with friends while you work using it. Environments need a lot more work for a smaller market share if you can look at them from any angle. Hardware is much more expensive (and always will be) compared to a system that just needs to render a screenful of content at the same quality level. Your UI options are more limited if you want to keep things immersive.