Cloud computing as an industry phenomenon is built almost entirely on open source pieces, but ironically (or perhaps, perversely) is used to create proprietary services. This talk shows how the four software freedoms achieved a more level playing field for software users and developers and provided a solid foundation on which innovation flourished. Innovation was an interesting by-product, not something pursued. Unfortunately, the four software freedoms are not enough to compel open cloud services. The lessons learned from open source should be used to achieve a level playing field in cloud computing.