Does Amazon Understand Its Business Model?

This morning's paper reports that Amazon will no longer sell video-streaming products from Apple and Google.  Now if Amazon were brick-and-mortar that might make sense. You might decide "oh, hell, I'm here and I might as well get this, rather than drive across town for Apple."  But that's not how Internet purchasing works.  Finding another product is a matter of opening another window and going to another site.  I'm still sitting on the sofa.  Isn't that the whole idea of Amazon?