Remember when Netflix unleashed all of the old episodes of Breaking Bad or when all seven seasons of The West Wing magically appeared in your instant queue earlier this year? That hapened because the Netflix folks know what's up and have been keeping their eyes on popular piracy sites.
Basically, they keep track of the content that people are most likely to steal from the Deep Internet and then purchase the rights to provide that content to you as a part of their glorious, glorious, $9.99/month offering.
Netflix execs have previously claimed that piracy rates decline in countries after it launches. Indeed, CEO Reed Hastings claimed that BitTorrent usage in Canada dropped 50% following the streaming service’s launch in the country.