That's how DSL was supposed to work in the US. The telcos sabotaged it by not maintaining their copper lines and forced the independent ISPs out of business.
The requirement was called "Local Loop Unbundling" and it required the RBOCs (legacy local telcos, from when the Bell System was broken up) to lease "dry pairs" to various competitive DSL providers at reasonable and nondiscriminatory rates. And for a few years it worked! The dialup ISPs started to move into DSL services and it looked like we would have real competition (admittedly DSL, but this looked decent enough at the time).
But they lobbied the shit out of Congress and got LLU killed in the early 00s.