As for this "hundreds of hours of content" I'd still disagree. Many of these "experiences" you mention are quite simplistic in nature and can't really be compared to something the size of Skyrim for example. There are great games, for example Raw Data, but if you look at the core loop it's just a wave shooter with a few levels. Flying sims - yes there are a few (DCS, IL-2, XPlane from the top of my head), same with a few racing sims (asetto, pcars, dirt, f1 something-something). In terms of RPG we have Skyrim VR and Fallout 4 VR (hmmm...). Doom VFR is a nice take on Doom 2016 I enjoyed playing. There are some nice Oculus exclusives, though I can only name Lone Echo out the top of my head (I have a Vive). We also have X: Rebirth VR but people are so burned on the word "Rebirth" that they didn't give it a chance. Which is a pity, I'm currently playing it waiting for X4 VR ;-)
Skyrim VR and Fallout 4 VR and Elite are good enough reasons (for me) not to need a 2D game for a very very long time. I played flat Skyrim for 1000's of hours, I modded flat Skyrim for 1000's more, I've sunk 1000's into the VR version and also released a few mods, I have still never finished the main quest. I play for immersion, in Skyrim I can hunt and gather, I can create a campsite when it's dark and I'm out in the wilderness. I craft potions and I cook almost every meal I eat. I walk, never run unless there is an in-game reason to do so and certainly never fast travel. A simple quest can take weeks, from gathering materials and food before I head out and then the journey to and from my destination.
I recently started Fallout VR, again 100's of hours in and 1000's more to go.
Elite, 1000's of hours playing exclusively in VR, I have never fired it up in 2D, not once. There has never been a need to, even when I played on my DK1. After many years playing I see many more left.
Minecraft in VR, I never enjoyed the 2D game, in VR I have spent 100's of hours gathering materials, crafting a home, building up a small holding and growing crops.
Flight Sims, well I have Elite and some top notch sim gear, why would I play anything in 2D when I have that on offer. I used to play lots of battlefield mostly as a pilot, why would I play in the dirt when I can fire up the likes of DCS World or one of the other top notch VR supporting flight sims?
Oculus have released some excellent titles and they have more on the horizon - I'd rather give them cash for the next Lone Echo than EA anything for the next mundane addition to one of the burnt out franchises they own.
Going back to battlefield, I used to love FPS games. I couldn't even imagine playing one on a TV set or monitor now. Using a game pad or K&M - no thanks, not when I can reload virtual weapons, actually go prone and snipe, look around corners and pop up from behind cover and take pot shots.... Alien Isolation in VR? Just wow - the scariest game I've ever played, could I imagine it on a screen - nope, not when I can tremble in a virtual locker peering through the vents in stone cold fear. The Doom BFG mod - also execellent, well worth a few quid and something I've still not finished! Yet alone started the DLC.
I'm not a fan of wave shooters, and yes there is a lot of them. All the same, I'm nowhere near content starved. While games support VR, that's exactly what I'll be using. If a game doesn't support VR, sorry I have no time for it and I wouldn't spend money on it.
I play VR roughly 2 hours per night (unless I go to the pub or work on mods), and I'm still not even done with everything I own...