Goggle Docs -- the future?

Is this the future of all software products? What do you think?

This is an excellent bit of software.
1. free, which seems to be what most people prefer of course, unless your own company pays for it -- but then that software must be able to invite others in to collaborate and view. So someone has to be paying all the writers unless they are doing this on their own time.

2. collaborating, sharing and viewing options are amazing benefits

3. Concern as to whether potential users will want to set up their own account. Once they are in, the learning curve seems pretty low -- if they are already familiar with the idea of the types and uses of the different features -- document, spreadsheet or presentation. Actually though this might be easier to use intuitively than PowerPoint and it doesn't have all the extra features.

4. I think this is the way to go. Accessible from any computer, no need for thumb drives or remembering to email it to yourself.