This is such a flawed statement, just because you have faster download does not mean you have to burn through your cap faster then if you were on 3G with a cap. You load the same amount of data in either case, 4G just allows you to see the page faster. I suppose if you read articles on your way to work every day(assume you take a subway train and are not dirving and reading of course) you might go through it slightly faster because the time saved loading pages will allow you to, on average, read 1 or 2 more articles more then usual. However, cosnidering you are only going to chew through a few MBs per page, I highly doubt you will chew through a data cap significantly faster. Now if you use bittorrent downloads, for example, over 3G/4G thats another story. Then you will of course eat through the cap quicker, but under typical conditions, I don;t buy this argument. Now I am not advocating data caps, atleast not when we are talking such small data margins as a few GB which is nothing in todays world. When 56K Modems(and the wireless equivalent) were around, that was another story, but in a world of netflix to go, 2GB is ludicrous for some one who travels alot.
If all I wanted to do was load pages, I would have not made that statement. Yes, loading pages is faster. From my calculations between my Dinc2 and my work Rezound, both with full signal, I load pages .325 seconds faster on my Rezound, on average. I usually see a second difference loading maps on Gmaps between the two, and my email retrieves faster. Great, that is awesome, sure, I might be able to load a couple more articles or download documents in the time I may have on a public commuter service. And yes, it is faster. However, with just that you have just barely scratched the surface of what a 4G capable device can do. But for your average user, that is all you need.
My statement was more to the fact that because of data caps, many other wonderful things that you can do with your phone on the go are rendered null and void after a certain point. Even things that Verizon and AT&T advertise, like video chatting, video streaming, any sort of cloud based storage, are made useless by data caps. My company has a Dropbox account, and even though they have a business style 20GB cap on my Rezound, when my average file(software firm) is between 500mb and 2GB, it becomes a hassle if I am on the road.