Quoting the Big Lebowski: "you're right, but you're still a jerk" :-)

Almost every time a "free plan" or an "unlimited plan" is cut off (BTW, in life there is no "unlimited" anything, just use common sense), it's not because some random person uses 10-50-100% more than what the person offering it thought everyone would use.

It's more like 1000%-10000%. And that's definitely being a sociopath/jerk.

Data hoarders are jerks, for example, no way around that. There's almost no rational way to explain it, it's just an addiction.