That never works in the US, the monopolist will just wait it out 4-8 years until there is a friendly administration. You have to break them up any time you have the chance, it’s the only effective remedy.

That's the legal paradigm that we used to stop the railroads from choking America. But the real killer of their power was the Interstate Highway System - i.e. government funded infrastructure. Prior to the IHS there wasn't really ANY nationally funded infra[0] of that scale, we'd outsourced building it to private industry instead. After that it's basically assumed that infrastructure was the government's job, to the point where even the most conservative among us would point to "roads" as a thing governments do well and should be empowered in doing.

So anyway, the US government should run an open-access, quad-track railroad and fiber backbone along every highway. Maximize the ROI on that ROW. Also they should nationalize Android and iOS.

[0] Because slavery. The South really, REALLY hated any government roads because it diminished the economic power of literally owning a lot of people. Hell, one of the stipulations of the Confederate Constitution was to strip the General Welfare clause out of the constitution.