The REALITY is that running new lines is easy enough, and the rewards high enough, that companies will do so if they can.
The REALITY is the incumbent has already spent the money to run those lines, and already amortized the costs. They can easily cut their rate such that the "rewards" are no longer high enough for a new entrant.
See, the expensive part of rolling out new service is running the fucking wires. It is not technically difficult, but it costs WAY more than every other part of creating a new ISP/Telco/Cable company/Electric utility.
Which is why cable companies and telcos and electric companies coalesced into natural monopolies, which then were "burdened" with regulations when they abused that monopoly power. The incumbents lowered their prices to run competition out of business, and then abused their monopoly position to the point that the people demanded regulation.
It happened with three different technologies, yet here you are to explain what REALITY is entirely different than actual history.
I know this is the case, because where they can Google is doing this today.
Google's business model is not selling Internet service. It's selling all the data surrounding your Internet access to third parties. Becoming an ISP is the loss-leader to gather that additional data.
If Google was trying to just be an ISP, they'd have gone the way of "Wide Open West" - run out of business by the incumbents
But they are rolling out slowly because in each case they have to fight local government and a very powerful and very UNNatural cable monopoly in each location
Sure! That's why those evil local governments offer Google large tax incentives. Because somehow giving Google money makes it super-difficult to run those wires.....oh wait, that's utterly insane.
I'm not sure why you have any problems with what I'm saying because it's plain from the real world this is the case
It's only plain if you utterly ignore actual history and retreat into the Fountainhead.
The same pattern happened with every service that required a "last mile" wire to homes. ISPs, Cable, Telcos, Electricity. Yet you insist that pattern never happened.
and it's equally plain form the real world how utterly incompetent the government is at things it takes over
One of the highest-rated ISPs in the country is the City of Chattanooga. Highest customer satisfaction, lowest downtime, and gigabit to every house.
The lowest-rated ISPs are the major private carriers. Higher downtime, and frequently can't meet their contracted data rate, much less gigabit.
You've been sold a philosophy that doesn't actually work in the real world. But it sounds good on a superficial level. And most importantly, it's massively profitable to people who are not you. Government works fine until those profit-seekers pay to sabotage government via chronic under-funding.