That's entirely why Zuck's been pushing VR and the metaverse for so long. they have no OS to control - Microsoft has desktop, Apple has their vertically integrated devices, Google has both Android and also Chrome.
Meta is at the whims of these other companies to play nice - and they already got hit hard once by apple when they decided to anonimize add profiles on the iphone and go privacy first.
Okay, so I've heard Apple "prioritized their own ads". If there's meat behind that - cool (and perhaps might not do anything about certain scummy listings on the app store)
But app stores and iOS ostensibly exist exactly so Zuckerberg can't do what he does, which is steal credentials. Facebook syncs everything, bought Whatsapp to do the same; of course he's pissed off his ill-gotten moat got attacked