said by LanAdmin:Acanac cable Internet access on Vidéotron currently has plenty of capacity.
Acanac is no more different than any IISP. If the capacity is not enough at peak you will get some slowdown and they will order more capacity.
The whole point of Acanac's lower prices is that they will use throttling to delay having to buy additional capacity. CBB capacity uses peak-billing, so if they can lower the peak usage by throttling, it reduces their costs, enabling lower pricing. It will give them a flatter usage curve, enabling higher utilization of the link.
Their entire pricing structure depends on that throttling, so anybody assuming they're never going to do it isn't thinking straight.