Well, few things I want to point out.
1: The copyright people punish people who download and share files illegally through legal methods. They punish these people servery to intimidate other who share files illegally.
A word to all file shares and people who don't file share:
The more we share, the less there will be caught.
2: If you watch the video then you heard someone say that they declared war with sharing.
3: The way computers are going now, it's IMPOSSIBLE to track EVERY sharing/illegal download people are using. Even a business with ten thousand workers could only catch ten thousand a day at most. How many people are in the world and does the Copyright enforcers have a large workforce?
The video very states one things that I think is completely true:
"In fighting file sharing, the entertainment industry is fighting the fundamental structure of the internet."
The internet was created for us to be able to share anything
we want, and in essence, file sharing is the internet.
That quote I believe is amazing though.