Earlier quoted context omitted.
I found the article I summarized here: http://www.outsidethebeltway.com/whats-really-behind-the-net... I think it explains the facts in the simplest way.
My take home is this: Netflix competes as a delivery pipe for content with Cable providers. Cable providers already get ~$50/month for your Internet connection, and spend (collectively) $32 billion/year on streaming content, aka "cable TV". Netflix wants to build on top of the network infrastructure of Cable providers while paying far, far less for the same content. This is their business strategy. Verdict? Sell your…
Currently, the content industry gets $32 billion/year for content. There are still a few people ("marginal consumers") that aren't paying for content now, but at a much subsidized price, are willing to view it.
These are the customers Netflix has right now for streaming.
Now here's the problem: marginal consumers are only marginal when the represent an insignificant portion of users. When they grow numerous enough, the pricing terms have to change. That's why Netflix is jacking up prices.
Eventually, Netflix will have to pay the same price as Cable providers for content (and it's nowhere as close to as cheap as what Netflix is charging now).