Worked in my home town for about 20 years until they outsourced to our version of Comcast as a ‘cost-saving measure’. Wow, were they stupid.
It actually worked astoundingly well before that. Hated ISP a? Make a phone call and within an hour your same gear was now on ISP c.
At a recent job I worked closely with some muni IT people. Their plan is to fibre their area and then price the backhoe access out so the ISPs have to compete over the common infrastructure and can’t restrict access. City doesn’t want to be an ISP; just manage the glass.