I think the key there is not outlook but all its friends that get dragged along like cobwebs. First there's Exchange, then AD, then the whole CALs thing, then

I think the key there is not outlook but all its friends that get dragged along like cobwebs. First there's Exchange, then AD, then the whole CALs thing, then you need spam and malware filtering, then there's archiving and backups, and don't even talk about client compatibility and upgrading all the desktops and _THEIR_ licenses. Or you skip all that and pay the other hand with 365 seats. So it's not just Outlook, because it's designed to be not just Outlook.