@Gargron
Corporate greed is incessant. Meta has zero interest in ActivityPub except how it might help drive up their stock price.
My gut says to the degree that the nature of ActivityPub will not allow Meta (and other rich capitalist companies) to do what they want, they will then try to control it and change its very nature at some point and in some way we likely, today, think cannot be done and therefore will only learn about when it's too late.