Personally, I think FB is in trouble because it became 'your grandmothers social media'...
the youngsters seem more interested in insta and tiktok
the youngsters seem more interested in insta and tiktok
... which is owned by FB. Between Instagram securing the audience of the next generation, and Whatsapp gaining huge share as the communication tool of developing world, FB is going to do just fine, even if facebook.com usage totally tanks (also unlikely)
As for Whatsapp, it makes no money, and there are plenty of non-monetized instant messengers, so I can't see them making a profit there.
The one thing they still have is Instagram, but it's "reels" haven't beaten tiktok, and it's already filled to exhaustion with ads, so it's a matter of time before it's popularity starts to decline.
As for the multiverse, that will never amount to anything.
Then something else (possibly NOT FB owned) will take over... like another tik tok. Kids don't want to be on the same social as their parents. Its gonna be a revolving door every 5 or 10 years.