Counterpoint, there's always been a desire to have a virtual environment as first shown in 80's sci-fi films like Hackers, Johnny Mnemonic, etc; immerse yourself in a system, have it become like a natural extension of yourself.

There was someone on here some time ago who showed and talked about his setup, he had been doing his job as a software developer reclined in VR for years at that point.

Here's the thing though: smartphones didn't have "a" killer app per sè I don't think, but they became part of everyone's daily lives in a really short timeframe. PCs and laptops didn't have "a" killer app, but pretty much everyone here has it as their day job.

I don't think it's about whether it has a killer app or not, I think it's whether it can become normalized and mainstream, and be listed alongside the TV, PC, smartphone, the car, etc; something everyone will have in one way or another.

That said, I'm cynical myself; modern-day VR and AR has been tried for a decade now or thereabouts; Google wasted billions on Google Glass, Facebook bet their whole company on the metaverse / AR / VR and has had to backtrack, Magic Leap was a mystery company that raised billions and failed to deliver, Oculus and Vive have their place now as a somewhat niche and pricey gaming implement - popular as arcade / events (I went to one for a birthday party this weekend) and middle class households that have the money and space for it.

So there's a market, mostly in gaming, but it's not become as mainstream yet as e.g. the smartphone. I don't personally believe it will, but if anyone can take an existing concept, iterate on it and make it mainstream, it's Apple.