For now. I do not expect Meta will allow headsets indefinite multi-source operability. At some point they will force a rift between first party and third party games, but not until they’ve truly starved major competition out.
Remember when people bought cell phones primarily to make phone calls?
Mark thinks he sees where this is heading, and rather than just letting people play games with his metaverse headsets, trying to gain market share and dominance by legitimately anticipating desire, instead he’s going to drag them towards the future he imagines, kicking and screaming.
The people might be kicking and screaming, too. Wouldn’t you?