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I fully agree with a breakup but arguably other than Search, DoubleClick, and Youtube, none of the others are solvent without ad money. On thing I feel we are still missing is for FSF, Wiki, Archive.org, etc. to effectively gather enough cash to start lobbying in politics and in industry much in the same way Meta and Alphabet do. Politicians/legislators are ridiculously cheap to lobby in the grand scheme of things.
Chrome is probably the best example. I don't really know how people would expect that to be a company or even a division under Alphabet. It's rather unfortunate, because I don't think Google can be trusted to build a browser anymore. Android is also a weird case. All funding is coming from Google, but the revenue isn't coming from licensing of the OS. Separating out Android and require manufacturers to pay a license…
They'd only have to pay for Google services like the Play Store. However half of them would now belong to a different company and I don't know if the Play Store would be self sustainable on it's own?
Samsung already has their own store, smaller ones will probably still stock to the Play Store for the time but increased fragmentation would be unavoidable.. That might not be a bad thing on its own, however I don't see how/why anyone would continue funding the development of the open-source bits of Android to a degree Google is capable now.