How much of the infrastructure did companies like Comcast fund? They should get a check from the government, if they become public utilities and they funded it.
It's also disingenuous (and just factually incorrect) to say there is 'nothing' in return.
https://www.highspeedinternet.com/providers/fiber
Multiple companies offering Fiber in many parts of the US.
There are also multiple options (Comcast, Wow, AT&T, Time Warner, bell atlantic, satellite, and many wireless options) in most areas of the US, which by definition means there isn't a monopoly.
Many people throw out the 'monopoly' label and really have no idea what the word means.
They literally did not fulfill their contractual obligations, but thanks to lobbying, were forgiven.
https://www.huffpost.com/entry/the-book-of-broken-promis_b_5...
https://www.dslreports.com/shownews/ATT-Takes-Billions-in-FC...