In Texas and Massachusetts you can actually pick your power provider while paying the natural monopoly for the wires. In time I hope we all can do this.

We do that in Northern California as well. There are only a couple of options though.

This is how it works in NYC, but the wires are almost twice as expensive as the power. (If you add taxes and the numerous weird fees, the total bill is a solid 3x the cost of the power.) It's really all about the grid maintenance and management these days.

We do this for gas. IMHO you end up paying monopoly rates for the pipes and then stupid game prices for the gas. Maybe the savvy consumer comes out ahead but seems like a net negative to me.