I don't see how a normally libertarian-leaning group of people have embraced regulation rather than deregulation as to this issue. Why do local ISP markets tend towards monopoly, even though it has been illegal since 1992 to grant local cable monopolies? Two words: universal access. It's the same principle that led municipalities to grant taxicab monopolies, of the kind that stifle companies like Uber today. The idea…
I don't see how internet is any less a natural monopoly than electricity. Picture a residential street with 100 completely separate fiber optic networks vs 10 vs 1, now which seems more efficient. It's not like everyone connects to a different Hacker News.
So deciding the "right" number of network operators in one place is subjective, and comes down to what consumers are willing to pay for. Or at least it would, if competition weren't illegal. There's nothing "natural" about the monopolies we have now.
And even if it turns out that a single network is the best arrangement, it should still be possible for municipalities to choose to own their own last mile fiber and buy transit at competitive rates. Which is also generally illegal in most of the US, thanks to the lobbying efforts of the big incumbents.
And it's also absurd that we're still letting analog-era regulations govern our use of wireless spectrum. We should really have ultra wideband wireless ISPs by now.