Then they'd better make it viable really quick because that seems to be about the price point that the market has decided on.
I also don't see why it wouldn't be viable as long as you distribute it to the content that's actually being watched.
When you break out just movies, $10/mo might be what people actually want to pay. I suspect the actual right price point for the mass populous is somewhere > $10 and < $50... but Netflix has to live in a world where people already have TV, thanks to aggressive bundle pushing strategies from cable companies. At $10/mo, Netflix is priced the same as Stars & friends: like "channel packs".
I think for this reason, you'll never see that expense go away and TV will remain fairly ubiquitous.
IMO the future is about more films with lower budgets. At present the amount of money that film studios piss away with their bloated budgets is utterly unsustainable.
The public loves and wants big budget expensive movies.
Even some celebrity actors are marketing.
Thus, those $200 million budgets are the budgets for making the movie, with additional outlay for marketing the movie.
Why not?
Further, can you explain that in terms an avid Netflix customer can understand?
They have to charge more somewhere due to their skyrocketing license renegotiation costs the studios are charging. And they can charge this, because there is a demand for their content.
Still $10 a is in the order of magnitude. Some will pay zero, some will pay 20 - 30 (netflix,itunes,amazon,etc).