When there's only 744 hours in a 31 day month, I sincerely doubt that that is much of a problem for most people, unless you and your whole family are each downloading several movies every day, or you have 15 children playing online games 24/7.

The most amount of people that I know in one family is 10 kids. I don't know how he keeps sane.

It's those 300 GB Microsoft updates that are more likely to use up the data.