>Second, you absolutely can build something more stable and predictable than Amazon precisely because you're the one that built it - which means that it is more comprehensible and fails more predictably and gracefully.

This is from you and this is from the wikipedia article on NIH(not invented here) syndrome ...

>Not invented here (NIH) is the philosophical principle of not using third party solutions to a problem because of their external origins. False pride often drives an enterprise to use less-than-perfect invention in order to save face by ignoring, boycotting, or otherwise refusing to use or incorporate obviously superior solutions by others.

I am not saying don't have a copy, I am saying the if you have several copies the safe one is in the cloud.