This is another piece of evidence against the "Zuckerberg Exceptionalism" theory. I've argued before that he is neither a great leader nor a particularly intelligent person outside some alleged Math talent. He was, at best, a competent entrepreneur and very hard worker who was in the right place at the right time.
Meta's strategy is the kind of thing many/most people here could have come up with:
* "We have lots of users, let's show them more ads"
* "They are doing AI, let's do AI".
* "I've watched Ready Player One, let's build VR".
Duh.