Primarily as a result of the old guard not licensing content or demanding fees that would break Netflix's pricing model. It ain't because Netflix doesn't want to stream it -- they'll show pretty much anything if they can get their hands on it legally.
As more and more folks flee cable/satellite, the industry as a whole is going to have to adapt to figure out how to survive profitably.
I’m sure that’s the problem and I’m sympathetic but I’m still going to close my Netflix account because the content is so sparse.