Carriers also make the similar claim, doesn't affect the vast majority of users. Great, then they don't need the caps since it is only a tiny minority using more than 2GB.
OR, people are used to caps and don't bother exploring services that are data hungry.
Yep, the Mr. Bumbles at the carriers can stop lying about how they need to limit the gruel, charging $10/spoonful. This shows that if you starve a person long enough, they stop asking, "Please sir, may I have some more?"