You are so full of shit that I'm cracking up. If you download even a few linux ISO's you'd already be around 6GB. Add in even one or two netflix movies a month and two hulu movies and you're already over that.
Downloading one blu-ray is 8GB heavily compressed.
One HD Netflix movie is around 2 GB.
And the ISPs don't care about how much data is in one illegally downloaded Blu Ray.