In my perfect world, municipalities would only fiber that ran to every home and to a central facility but they would not manage any logical devices or infrastructure. Any carrier who wanted to have a presence in the facility could, for the same exact cost.

Customers would then be able to pick and choose their carrier and carriers would be forced to compete based upon service. Not happy with ISP A? Call up ISP B, sign up, and they'll put in a ticket to a tech at the facility to patch you over from ISP A to ISP B instead.

I realize, of course, that this a fantasy that will never happen.