They (Naperville) were trying to become a phone company themselves last I was living there so this is not just a fairness to our residents thing.
It is also a competition thing.
IIRC, they were wanting to do this since Ameritech/SBC/AT&T wasn't rolling out Project Lightspeed/DSL due to another fight with regulators, and since the telco wasn't doing it the city said we would.