"It will be hard for Google and Microsoft to keep up given AWS head start."
I too, am impressed with Amazon's velocity - but, I'm curious - once Amazon lays out the product roadmap - storage, message queues, DNS, archiving, etc... what's to prevent Google/IBM/Microsoft from just cloning those services?
> what's to prevent Google/IBM/Microsoft from just cloning those services?
Nothing. That's the best part about commodities. Their price gets driven down by competition (note what S3 and EC2 pricing started at, and what it is now).