HBO was doing that long before Netflix had original programming and Netflix, fairly overtly -- as in, I'm pretty sure I remember Netflix execs saying this -- was following HBO's arc rather than vice versa.
It happened.
Sopranos, The Wire, Deadwood, Sex and the City, Entourage, etc., all well before Netflix did originals.
Netflix has obviously run with the idea though. I'd love to see Netflix and HBO merge actually.
A former Netflix tech guy once told me that "People get Netflix for the movies and stay for the TV shows." Though that's probably less true than it used to be given Netflix Originals and a pretty wide recognition that their streaming movie catalog is limited. Today it's probably the Originals that drive the purchasing (as with HBO).
Lately I'd agree, but a few years ago that didn't have much and it was mostly high quality. So many of netflixs originals seem to fall into the super hero category that I'm not interested in.
Of course, Netflix is well worth the subscription and if you don't watch a lot of TV, it has enough content to keep you entertained for a while. But I've noticed that I discuss HBO shows more with my friends/family than Netflix ones.