Console makers usually make peripherals only work for that single console. The reasoning is that the games are only tested with those specific devices so it's hard for them to know if new games will run on old hardware or not. This totally sucks and they know it, so they generally don't come out and say it. But I believe this is why the PS4 controllers don't work on PS5, but do work on PS4 games being run on PS5 hardware (a kind of made up restriction if ever I heard one!)

Sadly, not the most fun info to share, but there is little chance the PS2VR will ever target anything other than PS5.