Your math is fine, but your logic is rancid and awful, though quite typical for Slashdot anarcho-nerds. The fact that you felt the need to express the figure in kB instead of kb, while also trying to make a rather fanciful comparison to "modems"â"which of course could not pull anywhere near the same amount of dataâ"and the even sillier fact that you contemplate literal 24/7 throughput for a *mobile* device whose usage by an ordinary device-addicted person would arguably max out at *8* hours a day of non-stop usage, should have been a sign that you were trying to understate the quantity by orders of magnitude.
Back on Planet Earth, 100GB/month is a lot to be pulling over a FIBER connection to a desktop PC, and, by way if example, reflects far more HD Netflix bingeing than any sane and gainfully employed person could muster in a single month.
Pushing further into the realm of thinking like an adult, it's simply not "false advertising" to presuppose ordinary human norms of product use or resource consumption when describing a product or service offering to the public. The advertisement is quite reasonably geared to the public in general, not to some pushy jerk playing semantic games.
To repeat, 100 GB a month is a massive shitpile of data that is utterly unreasonable to expect from a flat-rate subscription that is priced for normal adult humans with jobs. You *should* feel like a freeloading dick if you even come close to that on a regular basisâ"but Verizon isn't even kicking out people who simply happen to break that number on occasion. As the article makes clear, they're talking about people who use "far in excess" of that amount, on an ongoing basis. The price tag for a plan that is actually keyed to the data throughput in question, $450, should give you an idea of the relative costs to the network infrastructure of letting a single person pull that many bits.
TL;DR, after promptly shutting your whiney face hole, go to any restaurant advertising "all you can eat" and try to eat 100 pounds of lobster. Or chicken breasts. Or, hell, even *potatoes*. And then come back here to make another post about how The Man keeps beating you down, and you're going to file a lawsuit for unfair commercial practices, and so on and so forth.