If they have profit, we should be splitting that money towards addressing other needs. Maybe some profit is fine for ensuring sustainability or whatever, but like, potholes aren't the only need.
If we're not going to allow that, there's no need for money at all. We'd vote on what needs doing, and it would always be something like mending roads, and we'd all have to knuckle down and do it, through a conscription-like system, on pain of pain. It would never be fixing the broadband, though, because broadband is a crazy imaginative project, like building a pyramid, so there wouldn't be any.