*sigh*. So producing a 4K digital print from 35mm is totes free, but patching VR support into an old game is impossible.
Content exists. Already. A good amount between hacked in support, engine ports, officially patched in support and stuff made for VR in the first place. Well beyond what you'd expect from a console at launch, anyways.
It depends on the game. I'm sure Codemasters spent less adding VR support to Dirt Rally than it cost to post convert Star Wars.
Oh, I'm well aware that VR support has been patched into many games. I'm also aware that patching VR support into existing games doesn't work that great in many cases (obviously depends on the genre). I don't think that patched in VR support is going to be what drives adoption, new experiences will. Shit that people have never seen before that makes them go "holy shit I need this," not "wow playing HL2 in VR is pretty cool."
That said, I don't disagree with you on the amount of content that will be available at launch, merely pointing out that without adoption the incentive to create new content by developers could be a challenge.