I see Netflix at the same point where Amazon was once Barnes & Noble seriously got into the online game and started compressing their margins. They had to make the decision as to whether or not they wanted to sell their business and get out, or to move away from being a pure "dot-com" business and make some serious investments in warehouses, distribution networks, and other infrastructure.
Quick Amazon story- In the early days of the company you used to have executives filling the orders at the end of each day- the place was totally run as an "all hands on deck" type of shop.
Netflix is running into the similar problem that almost all web based businesses do- commodity products have little to know margin, and once the rest of the world (e.g. existing brick & mortar competitors) catch up it is VERY hard to continue to make money. Netflix, like Amazon, has an advantage because they have a great physical distribution system. The driver of that business, once the thrill of online rentals went away, has been its distribution system. The issue there is that the only way to make money off of a distribution system is to have very high volume (like Amazon) of a wide variety of items and to be able to do it cheaply.... this is where Netflix differs.
I don't see Netflix being successful as an online movie streamer/download supplier because that's not what they do well. The amount of investment that will be needed to sustain that business over the next 5-10 years until A) Technology catches up from a broadband and storage perspective, and B) A sustainable segment of consumers view it as a true substitute is going to be very large and I don't see Netflix being able to support it.
If I'm the owner of Netflix, now is the BEST time to sell. I don't think the company will ever be worth more, from a business and a brand perspective, than it is right now- the state of the rest of the economy be damned.