Do you honestly believe that "most users" use GMail and Hotmail? Most users use an ISP, but lots and lots of companies host their own mail, sometimes for good l

Do you honestly believe that "most users" use GMail and Hotmail? Most users use an ISP, but lots and lots of companies host their own mail, sometimes for good legal reasons. It would be interesting to know if Microsoft sells more Exchange licenses to hosting companies, but I don't think so.