Despite the promise of cloud, are we treating virtual servers like physical ones?

RightScale had some great data about usage of Amazon EC2 recently that described how cloud computing is evolving, or at least how their portion of that business is progressing. At first glance, it certainly sounds as if things are maturing nicely.However, a couple things they reported caused me to question whether this trend is as rosy as it seems initially, or if IT is actually falling into a