I live in a post-Soviet city with district heating, and I'm not really sure it's worth it. Our network is government run, and they don't do a bad job, but it is more expensive per kWh (8c) than if you were to heat with gas or an electric heat pump (both 6c).

The heat source of the network is gas or various oil fuels, so it makes sense that it's cheaper to do it yourself - gas infrastructure is very optimised, and there are very little network losses in comparison. I think it only makes sense if the network has a cheap energy source, for example by using waste energy from industrial processes or utility-scale geothermal.

In USSR it was common to use waste heat from a thermal (gas/coal) power stations for district heating. Heat itself in such system is basically free - instead of sending hot water to cooling towers it first used to heat homes. But a pipeline network is not cheap in maintain (pipelines were usually not well maintained and leaks were common but with modern materials corrosion should be less of a problem).

Most district heating systems in the Nordics are publicly owned, in part or in full. There are also price controls for the privately owned ones.