This is an important question. Government in this country has a bad habit of encouraging monopoly ownership of physical infrastructure. For true competition, a nonprofit entity (e.g. the government) needs to own the wires and cell sites and rent them out to companies, reinvesting all profits into more infrastructure. Alternately, they could provide free (tax-funded) internet service to all.
Instead, I’ve heard several states have (in response to lobbying by big telecomms) written laws specifically to prohibit municipalities from providing nonprofit internet services to their citizens.
Here’s a timely article about poles for you.