In some areas, that might be the case. But then there is routing, provisioning equipment, people to handle customer support, modems themselves, etc.
Not to mention all the old wiring in everyone's house, especially in the city.
Oh and if for some reason you actually do decide to invest in infrastructure, you get to fight local, city, county, AND state government for permits, taxes, etc.
Sometimes government good, sometimes government bad. Haha.
The point here is internet infrastructure is in no way a natural monopoly like sewage or water. The margins are plenty high and there's no physical problem having two or three competing physical networks most places. The only reason we don't have competing local networks is artificial entry barriers.
Not to mention all the old wiring in everyone's house, especially in the city.
Oh and if for some reason you actually do decide to invest in infrastructure, you get to fight local, city, county, AND state government for permits, taxes, etc.
Sometimes government good, sometimes government bad. Haha.