You can't compare the 80s and 90s to present day. Home and mobile PC technology was almost non existent for the majority of the mainstream public. So was the internet and proper bandwidth speeds. And technology itself such as displays wouldn't have made VR worth it.
Your original argument was that there's lots of investment in 3D now and there wasn't previously, so we'll stick with that. Sure phones are faster now, but that doesn't mean everything you predict about them will come true. 3D has been toyed with for ages and while it's fun, IMO it's not gonna take over how we use mobile devices.
All you're talking about is old wine in new bottles. For some history lad...
- 3D Movies have existed since what... the 60's? Earlier? This was totally mainstream because back then the cinema was THE thing.
- During the 1970's and 1980's, there were 3D arcade games at EVERY arcade. These were massively popular and didn't always require 3D glasses. While computing power was like... 2Mhz machines and stuff, there was a massive investment in researching the physics of how to trick the eyes into thinking an image was 3D.
- 3D console games have existed since the early 80's, as have plug-ins for the popular consoles of the day. VR was all the rave in those times.
- The virtual boy existed in the 90s (
https://en.wikipedia.org/wiki/Virtual_Boy) as an affordable option... $179.95... it was cheaper than most consoles of the day. It was also pretty fun to use... I suggest you seek one out.
- Sega World (Sega was a company made consoles before the Xbox and PSX existed and they were madly into 3d/VR solutions in their amusement parks, arcades and consoles). In the 90's I'd go to Sega World regularly... if was like Disneyland, but for the rides you'd pop a VR set on, look around (seeing a virtual world as you moved your head) and do anything... drive racing cars, fly space ships, ride flying push-bikes, ride a roller coaster. This stuff was much more amazing than Avatar and '3D' screens that got a tiny bit of momentum afterwards (until people realised it was a rubbish movie - they just hadn't seen 3D for a while).
- I lived in Japan during the 90's... seriously, EVERY Japanese electronics company had its own take on VR. Panasonic had a massive VR world in Tokyo where you could row a banana through space, shoot down baddies (all with VR headsets where the 'world' moved as you tilted your head) and get a 3d video of the whole thing that you could watch on your TV using $2 cardboard and cellophane 3D glasses. The investment during the 90's was huuuuge and people were using VR regularly for entertainment. This kinda died off because you can't play 3D games for hours without getting dizzy... people much prefer long mind games rather than sugar and fizzy water (VR) for 30 minutes.
- VR graphics cards that converted ANY 3D game into VR existed all throughout the 90's.
While I can see why kids like you are all excited about 3D/VR on your Androids, this is nothing new. VR has existed since before you were born, and just because the machines look old to you, it doesn't mean they didn't have a MASSIVE buzz around them back in the day. The buzz around this Android BS is non-existent... it's a gimmickie selling point for some Samsung phones and billion dollar Google have made sure they have 1 division that explores VR (as I'm sure most large multinational electronics manufacturers do too).
5,000,000 people worldwide buying a cardboard box for $2 demonstrates the demand (as I've already said). It's not great, and VR isn't the next big thing... it's old wine in a new bottle. I'm sorry to burst your bubble lad.