The thing with VR is, if you wanna develop a VR game, don't try to get both worlds, because you will sacrifice certain elements of interaction in one of them and the overall experience will turn mediocre. Superhot developed a VR game slighy different from the flat one. They just didn't add VR to it like it was done with Skyrim VR and Fallout 4 VR, those are terrible imo.
VR is not just a TV strapped to the head. It's way more than this. So, if a developer wanna go VR, go all out.
For Sony's PSVR, there wasn't much option, since the VR was pretty much limited. That will certainly change with PSVR 2.
Intel Core i7 8700K | 32 GB DDR 4 PC 3200 | ROG STRIX Z370-F Gaming | RTX 3090 FE| Crappy Monitor| HTC Vive Pro :3