The Cambridge Analytica scandal changed everything for Meta (then #Facebook). It severely limited Zuck's options to grow his empire. And those options were already narrow.
When was the last time you remember Meta buying a social media platform? WhatsApp?
The scandal exposed a lot of dirt, and US regulators don't want another platform under Meta's control.
So instead, Meta has used the k*ll part of Copy, Acquire, K*ll to maintain dominance.