That's not usually how technology development works - usually it's tiny steps in adjacent problems/products which suddenly coalesce into a new product, rather t

That's not usually how technology development works - usually it's tiny steps in adjacent problems/products which suddenly coalesce into a new product, rather than working for 20 years solidly towards a single product. Take VR as an example - A company that worked on VR since the 80's wouldn't have been unsuccessful, but the reason that the Quest 2 exists today is because of the smartphone, and the smartphone was built on the basis of large flash memory, mobile phones and laptops. Or AirPods, which built on the foundation of over-ear bluetooth headphones and wired earbuds. Bluetooth over-ear headphones obviously built on the foundation of wired over-ear headphones. NB: All of the technologies these built on the shoulders on were stable technologies which were generally received well in the market allowing continued investment in R&D. The closest thing this builds on is Google Glass or Magic Leap, both of which have been a commercial failure and are both a long way off a polished consumer product - and neither of those solve a lot of the technology issues here.