Comcast has a monopoly granted to it by the government.

Not here. It's a natural monopoly, just like sewer lines or electric transmission.

Where I live now, I paid $50k to get a private fiber optics line just not to deal with Comcast anymore. There were no other options. We _might_ get AT&T fiber, eventually.

Municipalities normally grant local cable monopolies.

But today there are other options. Starlink, for one.