When Netflix enters a territory Bittorrent traffic falls as the Netflix traffic grows

"What are you doing to combat piracy?
One of the things is we get ISPs to publicise their connection speeds – and when we launch in a territory the Bittorrent traffic drops as the Netflix traffic grows. So I think people do want a great experience and they want access – people are mostly honest. The best way to combat piracy isn’t legislatively or criminally but by giving good options. One of the side effects of growth of content is an expectation to have access to it. You can’t use the internet as a marketing vehicle and then not as a delivery vehicle."

Source:  Interview with Ted Sarandos of Netflix in Stuff magazine, 1st May 2013