When Netflix first started streaming, I honestly believed that in a few years we'd have access (at reasonable cost) to almost the entire catalogue of film history. That today we'd be watching any movie from the 30s to the 90s we wanted through the aid of a subscription service. We are far short of that. Even non-Hollywood and Independent films can be difficult to find. As a fan of directors like Peter Greenaway, Wim Wenders, and Jim Jarmusch among a half dozen others it is difficult, if not impossible, to find their movies streaming. Some of the films I had to borrow from my library because I couldn't find them streaming were Patton, Butch Cassidy and the Sundance Kid, The Hustler, and the French Connection--all pretty big movies but difficult to find without a Blockbuster down on the corner.
NOTE: Sorry for rambling on this topic. That is all I have to say, but if anyone is interested in starting a thread about how to find obscure movies (which service they're on, best DVD/Blu Ray, etc), message me and I will open one.