One thing I'll say for Amazon is the explicitness of the cost for storage and bandwidth, coupled with the simple fact that my (and your) startup are very unlikely to get anywhere close to something they haven't seen, make AWS extremely attractive for any real deployment.

We had a Dreamhost account (have!), and briefly entertained using them for our rollout, but some simple number crunching and common sense made us see that Amazon was set up for the possibility that we would really have to scale, whereas Dreamhost was pretty much set up for casual work-at-home developers who were looking for absolute rock-bottom costs.

Seems like the simpleCDN guys made the opposite decision, and went with a company that markets XYZ rather than really looking under the hood. It's incumbent on any business to vette their vendors and understand the risks, rather than just point a finger and say "they promised!"