Internet Allowance?

Yesterday, I called Cable One with a question about my bill. No big deal. While on the phone I asked why my bill varied a little month to month.

Apparently, I had exceeded my monthly internet allowance.

"Excuse me?"

How is this even possible?
Why would you limit internet?

This is the battiest most backwards concept I have EVER heard of.
It's not measured in minutes... but gigs.
Basically every time I use The Internet Machine it counts up the gigs and charges me extra if I go over.

Why does this feel my 10th grade cell phone plan?

Hate.
Solid and Pure Hate directed at you Cable One!