It's not lock-in; it's just a lack of standardization because there's literally nobody else who will sell you something with any device APIs that have anything

It's not lock-in; it's just a lack of standardization because there's literally nobody else who will sell you something with any device APIs that have anything to do with the ones this device supports. One big tech company going first in a space, and getting the big third-party media companies to pay attention, is exactly how you get other big tech companies interested in developing devices that support similar APIs (in order to steal market-share from that first company.) Which leads to those media companies growing out tools and standards that export to these systems, so that they don't have to do everything twice; which in turn leads to these systems then being targetable by smaller teams. (They already mentioned that you can run Unity apps on the thing. Presumably there'll be more of that.) Also, mentioning that this thing can play "games from Apple Arcade" and nothing else, is pretty much just down to pre-launch secrecy. Apple Arcade games are simply the games Apple already have access to; so Apple can make those games work on their new devices, without telling the games' creators they're doing that. They couldn't really tip their hand and show this thing to outside game studios — it'd have leaked all over the place. Real game development for the platform begins ~now; in a year, there'll probably be tons more third-party games on the "Apple Vision App Store" [bleugh] than there ever were on the macOS App Store.