At the Web 2.0 Summit in San Francisco, Amazon CEO Jeff Bezos and Adobe CEO Bruce Chizen both commented on Microsoft. Tim O’Reilly noted he finds it interesting Microsoft is a customer of Amazon’s web services, rather than a competitor. Bezos replies, “I’m sure they think about infrastructure…but I’m sure they have other units that want to get work done today.” Later O’Reilly asks Chizen about teaming up with Google to face Microsoft. Chizen says he likes to think of Google as a “heatshield.” More reports as WiFi permits…