Common myth. - Comcast made merely $2B in profits last year.[verified] - ATT made around $5B from wireline data last year. [unverified]
A lot of people think these are monopolies with the help of government without realising that a lot of companies including Google tried to bring disruption and have failed. Part of the reason why not many people are wasting their capital on wireline is because it is unlikely to give better results.
ISPs have terrible customer service because most of their efforts are going into keeping those wires and fibres intact. I would rather have a good working internet service and a bad call center rep than opposite.
Not to mention when you don't allow companies like Comcast etc. to bring cheaper labor from India, they will be forced to spend more hiring American college grads and spend more cash on their training etc. We have to pay for it in the bill.