He even mentioned the biggest thing MySQL has going for it, which is that it is a free, scalable DBMS. Just to follow-up, the notion of "free" isn't fully true:
http://www.mysql.com/company/legal/licensing/faq.htmlAdditionally, there are reports where people walked away from MySQL because of driver support issues.
Also, you really only get support for things the open source community wants to work on.
I'm just not a fan of open source databases - too much risk.