business - Why wants Amazon to sell DVD's in China?

Just watched this afternoon "Lost in translation" at a friend's home, since my neighbors are redecorating. I could pick it from hundreds of DVD's that are available for almost nothing at the streets in Shanghai.
Of course, there might be a slight possibility that in Inner-Mongolia distribution of illegal DVD's outside the cities is not as well organized as in Shanghai, but according to my estimation mostly those people also have no access yet to the e-bookshop that can sell them online.
So, why is Amazon then paying over 70 million US dollar for a business that is rather limited. It really beats me. Selling books is also not easy, as the German media group Bertelsmann has discovered the hard way. I have no clue how their bookclub is doing now, but compared to a few years ago it could on go better. Selling music online seems also a bit of a joke.
Access, says CEO Jeff Bezos. I bet they have gotten so used to losing money, they do not want to quit the habit fully.