Don't Amazon covers the loss from ebooks with Kindle (ca $250)?

If Amazon sells 500.000[1][2] Kindles at $250, and sells 1 million ebooks with a loss of 2$ at piece:

$120m in Kindles

-$2m in ebooks

1. http://mediamemo.allthingsd.com/20090203/citi-says-amazon-so...

2. http://www.businessinsider.com/2009/2/amazon-sold-500000-kin...