I just guess there will be some market for this, especially with smaller companies who don't want full time IT personnel and who are very geographically dispersed.
But other than hardware failure, which is pretty rare, I don't see why these virtual machines won't need any more or less IT support than a laptop on your desk. It's no different then using remote desktop to access your home computer. Is the home computer suddenly immune to IT complexity because the mouse, keyboard and screen is remote?
Plus, amazon's firewalls and stuff are probably alot harder to navigate to connect that desktop to multiple server apps running in multiple hosts since there is clearly no all dominating cloud hosting company?
I still see running a business with multiple cloud hosts with apps that should be integrated, being more expensive and more complicated than just running it on-premise with a quality Virtual server and an EverSafe! hybrid cloud backup for Disaster Recovery.