You don't go to jail...

"After a three-hour meeting in London, the Featured Artists Coalition, which emerged as a breakaway lobby group in the summer, backed the government's proposed introduction of "technical measures" to combat the rising tide of copyright theft. If they ignore two warning letters, persistent illegal filesharers should have their broadband connections throttled "to a level which would render filesharing of media files impractical while leaving basic email and web access", according to a statement after the meeting."

Source The guardian

If you read the article you'd realize the writer was speaking "metaphorically"