But indie support can dry up too if the headsets fail to attract a market.I'd argue the Vita is different from Vive and Oculus as being at least relatively open.
When was the last time vita had an exclusive indie game?
PSVR being a part of a closed platform can certainly have support dry up. PC is less vulnerable to that. As long as someone thinks the experience is worth it, it'll trickle in.
People have put in unofficial support into games like Minecraft and Skyrim.
Honestly that's a big reason why I have been thinking about getting a PC headset over PSVR.