Maybe the big ones just can't come up with a way to compete with Netflix without destroying their old business. Customers want content with reasonable monthly fee, but that does not mix up well with dvd/blu-ray sales, rental business etc.

Supporting Netflix is of course also something they don't like, since the more monthly paying customer Netflix attracts, the more viable competitor it becomes. This leads me to wonder that could it be that studios did not originally even consider Netflix as their competitor?