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^^^ this. AR/VR is do or die for FB.

How long before they buy Unity?

They already considered it in the past, in fact Mark penned an email explaining why and how it would be beneficial to their broader ambitions to own more of the stack as a hedge for the future of computing. You can read more about it here:

https://sriramk.com/memos/zuck-unity.pdf

https://techcrunch.com/2019/02/13/facebook-mulled-multi-bill...

It will likely happen at some point, if not by Meta than it'll be another tech giant like Amazon, Google, Microsoft, or even Apple.

Amazon has an engine https://en.m.wikipedia.org/wiki/Open_3D_Engine

Cynically, I think they made it open source so they could get some free development for it.

Also they open sourced the bits they didn’t want yo keep proprietary…? According to Wikipedia:

> In July 2021, Amazon and the Linux Foundation announced _that parts_ of the engine would be used to create a new open source game engine called Open 3D Engine

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