The problem for Meta is that it's almost certainly not going to look like what they're selling with their Metaverse which is some kind of Second Life knockoff. They went all in on a failed plan.
They've been consistently the best since the beginning
Why?
1. Best mobile SoC designs by far. Not even close.
2. Hardware company at heart. Their culture is built for hardware.
3. Way more supply chain and mass manufacturing experience which means cheaper manufacturing.
4. Hardware designed for iPhone, iPad, Mac can be reused for VR/AR which means lower costs and more economy of scale. IE. M2 is used on both iPad and Macs. M2 cores are derived from A15 from iPhone 13.
There's no way Valve would ever be sold to Apple.
Valve was bootstrapped by Gaben. It doesn't have any investors that want an exit, doesn't need to raise funds, and Gaben is already a billionaire. They have no incentive to sell themselves.