Not until you see something like this that you understand WHY they want to put CAPS.
I would understand this argument if ISPs were putting caps on users who were actually abusing the service. Downloading 100GB in a month on a 10Mb connection is not abuse. It's a way for lazy ISPs to pull in more money without having to expand the capacity of their network.
Not to mention the fact that ISPs have a tendency to hide what their caps truly are. This information should be readily available to users when choosing a service provider.