https://www.cnet.com/news/momentum-grows-to-break-up-big-tec...
Amazon Freight, AWS and marketplace, if one wishes to keep going.
AWS is a $400 to $600 billion market cap company right now if it were trading on its own, based on its operating income and the insatiatable market demand for anything cloud. The ticker is even available conveniently. They'll get to $150+ billion in sales and $25+ billion in operating profit in the next six to seven years (average of 21% annual growth over seven years; very much within reach). It might approach being a trillion dollar company a decade from now (at MSFT type multiples).
You'd split Facebook and Instagram as the most obvious separation line (and then do something with WhatsApp, it can be spun off or go with either or; FB already has messenger, so it probably shouldn't go with that entity).
Instagram is a $100+ billion publicly traded company on its own plausibly. There is some question on erosion in both FB and Instagram once you detach them from eachother. They both lose a huge protective moat and cross promotion (Instagram has become a lot more mature at this point, it'll be more at risk to userbase erosion going forward, versus say five years ago; and FB is definitely at high risk for userbase erosion with fewer moats).
Amazon Studios would be the same business model as any other independent TV/film production company.
Amazon marketplace operates on very slim margins to stay competitive, but it's hard to believe it couldn't be profitable on its own. Maybe it would have to settle for slightly less universal domination.
Many businesses make money by exclusively selling through Amazon, so there's no reason they couldn't spin off a profitable business that sells Amazon Basics and whatever other store brands they produce.
Whole Foods is obviously a viable business.
I doubt Ring was profitable but it was clearly capable of getting VC money on its own. If it can't be a viable business, why did they start it? And why did VCs invest in it?
Twitch was profitable before acquisition.
I know virtually nothing about antitrust law, and I'm not a lawyer, so I'm speaking largely out of my behind, but those seem like logical-enough divisions.
It's Facebook's version of Google's DoubleClick.