Cloud computing is a nice idea, but it's doomed because of a lack of control. There is no way in hell any intelligent company is going to let anyone but themselves have control of their proprietary documents (strategy, accounting, proposals, HR documents, etc.).

Maybe companies could set up an internal web server hosting the software with the employees' computers using cloud-computing apps to connect to the secure server. But I think Google has in mind that they host the apps in order to get the traffic. I could be wrong, but I don't see any advantage to this versus individual seat licenses or network licenses through a MS Windows network.