A small local ISP serving a small area would be a https://en.m.wikipedia.org/wiki/Natural_monopoly https://en.m.wikipedia.org/wiki/Natural_monopoly Usually it

A small local ISP serving a small area would be a https://en.m.wikipedia.org/wiki/Natural_monopoly https://en.m.wikipedia.org/wiki/Natural_monopoly Usually it is agreed that sometimes the infra costs are high, so there cannot be two or more competitors, so they are granted a monopoly in exchange for fulfilling the duty to serve the community.