said by tshirt:
I doubt there is a monopoly, just no other company has chosen to serve your area.
If by, "monopoly" we mean a company using predatory pricing to drive the competition out of business, AT&T and Comcast are not monopolies.
But wireline services tend to be "natural" monopolies, in that once an incumbent has built out an area, any competitor faces the same cost to overbuild, but has to try to convince the incumbent's customers to change. The Pacific Telesis Group tried to overbuild TCI, here. Wound up in dire financial straits, such that SBC, nee Southwestern Bell Telephone, bought them and sold off the cable infrastructure to AT&T Broadband Internet. Neither Pacific Bell, nor AT&T actually signed up cable customers. In the end, AT&T spun off ATTBI, and both TCI and ATTBI were bought by Comcast. So we have a duopoly (SBC, dba AT&T and Comcast); except for some rare cases where true competition exists.--
~Oh Lord, why have you come
~To Konnyu, with the Lion and the Drum