Three weeks ago I wrote that Amazon RDS was going to eat into MySQL's revenue potential. I also pointed out that Amazon's RDS was but a precursor to future Amazon cloud service offerings for other popular open source products. While that post was centered on Amazon, it wasn't a stretch to predict that any of the big IT vendors (IBM, Microsoft, HP, Google, Cisco, EMC/VMware, and Sun/Oracle) would offer RDS-like cloud services in the future.
http://www.infoworld.com/d/open-source/microsoft-azure-set-capture-open-source-revenue-streams-087
