The technology is very nice nowadays. also gives users a nice experience and also the feeling that you are really in a casino. The software behind it seems to me that is very complicated. In this way you generate more customers than no VR casino. Perhaps a matter of taste. Many people are used to it, isn't VR something of the last few years? For sure it will open a complete new world.
It's not something new, I don't know much about VRchat but I am pretty sure that they probably did it a long time ago so I am pretty sure that it's not something new. VR has been around a long time, before it's commercial use, they have made it specifically for surgeons or doctors if I recall, to at the least simulate operations.
Well, even in online games VR is very common and I saw Roblox games also had that VR.
I don't know how different in online games and the online casino, you need to move as well the same as your avatar. So --if no one will watching you, it will perhaps need a big space where you can move properly. I assuming all of these because I have never tried using virtual reality goggles and I think, for now, this is very expensive to buy.