It feels like iPod and iPhone to me.
At the time mp3 players were a niche with crappy hardware and low capacity. The iPod was a lot more expensive and a lot better - it caused general adoption.
Similar for the iPhone - smartphones were a business niche and had crappy hardware, the first iPhone was triple the price and expanded smartphones to everyone on earth.
HoloLens, magic leap are niche products (the latter also being crappy hardware), meta’s hardware is better but still mediocre and constrained by their lack of computing platform. Apple’s hardware is a lot more expensive and if successful will expand the market to everyone in a few hardware revisions.