I wonder how many is many. Of all the people out there using MS Office, what percentage of them could do their job just as well if not better with Google Docs,

I wonder how many is many. Of all the people out there using MS Office, what percentage of them could do their job just as well if not better with Google Docs, bearing in mind the advantages of an online suite such as collaboration and sharing. I wonder if the majority of MS Office users are just unaware of the alternatives or nervous about learning a new application.