These hypothetical splits show the perils of having outsiders (including regulators) make decisions like these. Just some quick notes:
> You don't need the retail arm any more [...] spin off the media company, comprising Audible and prime video, to make a Disney competitor
The whole point of the conglomerate model they use (following Costco) is that the membership fee grants consumers access to a bevy of services. The services may not work a la carte. Further, spinning Amazon media to become one of the weakest Disney competitors doesn't obviously enhance competition or consumer welfare in media.
> Spinning off the loser (Facebook), and the non-social networking product (WhatsApp) would let Instagram grow wings against TikTok.
The "loser" (Facebook) generates most of the revenue and profit at Meta.
The Google analysis arrives at a viable conclusion (the ads business could be run as a utility), for the wrong reasons. (For ex: Search/YT would not get a bigger premium by treating as first-class other, weaker, ad networks. The near-monopoly is what drives pricing power and is frequently a reason cited for forcing a hypothetical breakup.)
Anyway, this stuff is not obvious or easy, even assuming people can agree on goals (which is difficult).