It looks like the "all you can eat" days are officially over. Data is now being treated as a utility, like water or electricity. The more you use, the more you pay. What that means is that people with limited financial resources will have limited access compared with wealthier people.
AFAIK, there is a theoretical minimum of energy per bit required to transmit or forward it - not to mention the far more expensive bandwidth, which is even more a limited resource.
So the analogy is perfectly valid...and poor people OUGHT to do without Internet, cable, phone, food, water, shelter, life, ... They _exist_ to be shafted, and unless you or I are nice with our OWN money and not by stealing from other people via taxes, that's exactly how it should be!
But off the rant and back to the subject, with any service there needs to be a balance - tick the customers off too much and they should be able to go elsewhere...but the company has to make a profit to stay in business.