Hi Geoffrey,
Anyone with a data limit should understand or learn to understand that using the internet will use their data. Much like an analogy I used before about a water company, washing your dishes uses water. If you have a party, you'll have a particularly large amount of dishes and will use more water. The water company however does not "brochure" this. From a sales perspective, pamphlet-ing so much information before hand takes a lot of work, time and generally ends up in lost momentum.
I am a strong believer that our data plans, caps and capabilities are not hidden. They are out there for the world to see, in our FAQ's, websites and forum. I have heard sales calls that carefully explain that while a user can watch movies, they should install the status meter and be careful to limit the amount they view. Binge-watching is not something we recommend. Recently (actually I am not sure how recent), Comcast began putting 150GB limits on their high speed plans in certain areas and charging for overages at about $45 a month per a certain amount. Time Warner Cable has "Turbo Boost" that provides super fast speeds until you FAP, then basically hit a DSL type speed.
There truly has to be a limit on how much you throw at a customer before they become overwhelmed. I am not a marketing strategist or a sales expert and these are just my .02, but I would never sign up for a credit card without looking at the interest rate 🙂
Thanks,
Amanda