Though this isn't is a bad idea, if we really want to avoid the inefficiencies stemming from monopolies, we need to not just break up by business unit, but even

Though this isn't is a bad idea, if we really want to avoid the inefficiencies stemming from monopolies, we need to not just break up by business unit, but even more so ensure those business units are not themselves little monopolies. That would likely mean breaking up the units too; i.e. not just 1 search provider, but at least two; not just 1 android but at least two, etc. Having each smaller niche served by its own monopoly is perhaps better than having just 1 monopoly with a larger niche, but it'll still just converge towards today's ever more feudal society. There is 0 polical interest in dealing with that though, and it would be a really tricky issue - after all, if you're serious about wanting to support capitalism, google is by no means the only company that needs to go. It would mean a fairly dramatic restructuring of the corporate landscape, and you'd need to have answers for scenarios where economies of scale are so lucrative, they outweigh the benefits of competition (would those be non-profits with multiple competing clients?) Also, the laws around intangible value (i.e. intellectual property) are pretty much designed for monopolization. Finally, we don't live in a vacuum; how will you deal with transnational corporations, and specifically with overseas monopolies that can play off the now smaller intra-national non-monopolists against each other? As tax-avoidance schemes have shown, corporate structures can get quite complex, so it's quite possible some kind of mutually dependent franchise system might develop with the true ownership still centralized and monopolistic - but external. All in all, the path towards the idealized capitalist system seems implausibly long. We're going to want ways of mitigating the damage before we get there, and that implies ways of dealing with these kind of non-capitalist entities in non-capitalist ways; perhaps a special huge-size tax and a more interventionist state. And even that seems like wishful thinking in today's political climate...