Long term concern
I know some people defending the companies are mentioning that these fees will only affect a very small percentage of consumers who use a lot of services.
However, this is also how the internet companies introduce a new fee without angering the masses. Once this is accepted as common practice, then they will certainly come up with an excuse why they need to start charging usage fees on much lower rates of consumption. They will spin is as being about "fairness" to consumers who use less.
In a few years, the basic internet most household use today will cost $50-100 a month, even though the cost of providing service has remained unchanged. This is a strategic process to squeeze every last dollar out of consumers.