People also need to understand the public / private cloud. For example, moving to a cloud for $30 month is in effect still shared hosting - there are many other sites & users on the same san / network (public). You could be sharing the disk I/O etc with maybe a gazillion of other people.

The real benefit is in a private cloud, where your company is utilising your own network of servers / san etc for only your OWN (and your clients) benefit.