Google docs and spreadsheets don't work if you're on an airplane. But it's a technical problem that is going to get solved. Eventually you will be able to work on a plane as if you are connected and, then when you get reconnected to the Internet, your computer will just synchronize with the cloud.
Eric SchmidtEven though Google may do very well, there will always be an alternative to what Google is doing, and people will always have the free choice... because there's no way for us to prevent them from exercising that choice. That is one of the key aspects of why the Internet has been so successful. No technologies can dominate.
Eric Schmidt