The main reason I think for why the telecom market succeeds under a fully free market model is the fact that you're buying network access, not a concrete product. To compare it with electricity - every house comes with access to the electrical network for free and the network is maintained by the government; what I pay for is for someone to put voltage on these wires. Whereas when I pay an ISP, I pay for the right to access to the wires themselves. The data is either free (e.g. this site), or paid (e.g. Netflix), but the ISP itself doesn't enter the equation, they are just paid to maintain the network.
This suggests that you could privatise both the electric grid and the electric supply, but only if you enforce strict separation of the entities owning the one and the other. I'm saying this just as a thought experiment, there seems to be zero benefit to privatising the electrical network. The main problems with a government run service boil down to possible inefficiencies raising the price above what a hypothetical lean business would do; the fact that changes at the government level happen slowly; and lack of consequence for doing the job poorly. For an old, established technology like electrical wiring, these are mostly theoretical criticisms - it is extremely unlikely for a revolutionary change in electricity delivery to happen any time soon.
This suggests that you could privatise both the electric grid and the electric supply, but only if you enforce strict separation of the entities owning the one and the other. I'm saying this just as a thought experiment, there seems to be zero benefit to privatising the electrical network. The main problems with a government run service boil down to possible inefficiencies raising the price above what a hypothetical lean business would do; the fact that changes at the government level happen slowly; and lack of consequence for doing the job poorly. For an old, established technology like electrical wiring, these are mostly theoretical criticisms - it is extremely unlikely for a revolutionary change in electricity delivery to happen any time soon.