I don't know the details but when ADSL first appeared, the incumbent country-wide telco was expecting to roll out a total monopoly on ADSL internet. However, the competition watchdog forced them to sell it wholesale and that meant lots of ISPs got to resell ADSL. Ergo: competition.

Fast forward to the fact that ADSL doesn't cut it anymore. Said incumbent telco was looking to see if could roll out fibre-based internet to homes. Well, homes in cities, anyway. Without selling wholesale access. Competition watchdog was not impressed. Big incumbent Telco put their plans on ice. :-/

Wade.