The US did go down that route, in 1996. The FCC decided that only applied to telephone operators and not cable operators; then the telephone operators complained it wasn't fair, and eventually it didn't apply to anything.
There were issues with implementation as well, AT&T* would commonly offer lower prices to consumers directly through wholesaling; which makes it pretty hard to compete
That said, I would prefer a return to the mandatory access regime as well.
For all of the bumps and warts of the Telecommunications Act of 1996, as a consumer I remember the era fondly. My personal Internet connectivity improved more significantly (in terms of percentage improvement over time) in that era than it has since. Since that regime was dismantled, innovation in Internet connectivity has seemed far more stagnant and difficult for upstart companies to disrupt. It is a bit disappointing that we have elected to go down the path we have rather than revisit the model from 1996.
There were issues with implementation as well, AT&T* would commonly offer lower prices to consumers directly through wholesaling; which makes it pretty hard to compete
That said, I would prefer a return to the mandatory access regime as well.
* which was mostly SBC at the time