Care to elaborate ?

I think what he's getting at is that if Microsoft has a similar product and they gained 2 million users, it would not be seen as impressive, because that is still far less than 1% of all Windows users.

So, while Microsoft may have a competing product with many millions of users, at their scale it doesn't get the same recognition as a startup gaining 2 million users.

Anecdotally, I see FolderShare quite widely used. I have no idea how number of users compares to DropBox though.

FolderShare was acquired. I don't know if Microsoft has done a terrible lot with the program since the acquisition to be able to claim the success as its own.

Actually, the closest Microsoft equivalent is Live Mesh.

Foldershare is now known as windows live sync.