> I was expecting some insights into federal subsidies and bad incentives.

I would bet a large amount of money on that - there are green subsidies for building the chargers and keeping them built, but the actual operation (selling electricity) is a money losing proposition and a business that doesn't make any sense. So mostly broken chargers is a way to maximize green subsidy for an otherwise unviable business model.

Compare that to a gas station that makes money actually selling the gasoline, with an obvious incentive to keep the infrastructure functional.