It’s a contracted service. Police don’t usually give tickets unless someone calls them about a car blocking a loading zone or handicap ramp. Tickets from police look very different from tickets you get from parking enforcement. I’d be surprised if the city makes much money at all annually from parking tickets. Whatever money they do make likely just goes into the general revenue fund and is used for basic city expenses.

That said if a sign says 1 hour parking and your boyfriend says it’s fine to park longer I guess you learned a lesson about who to listen to.