[beagle3]

.... and be in breach of their own contract with those sites, who pay amazon for the privilege - for which they would lose in court if sued.

If microsoft had a signed contract with google, (which would probably entail payment to google) they would have a case. As it stands, they don't.

[Sven7]

They are asking Google for open access to content Google doesn't own just as Google is telling Facebook the same thing.