An interesting question is at what point does it become viable for FB to follow Amazon's model to scale its own system as a business unit...
As in, when will FB conclude that it again needs to widen its revenue stream portfolio, and it therefore makes sense to offer its own version of AWS?
Any predictions on FBWS?
And there's the FB hardware development division, a business unit that so far has also remained in-house but has its own revenue potential. I think people tend to underestimate MZ's ambitions to leverage the FB core to create a broad spectrum business. (following Google's leverage of search revenue to devour the advertising business, etc., and Amazon's leveraging of book sales to devour retailing and then logistics, etc.)