This is a really important point. Google owned the default position for me in setting up domain email for people. Their service is great and using it for a business was a pretty easy call. Most of these folks wouldn't have ever even tried google docs without their domain being tied to it. It is win win for google.

Now its all changed. $50 per user isn't a huge amount but it is more then zero. Google has taken the default choice for many people and made us rethink it. It can only work poorly for them.