Oh of course, but I'm a big believer in social contracts. What can I say :) - Citrix used to have XCP ( Xen Cloud Platform ), as a way of OSS the core functio

Oh of course, but I'm a big believer in social contracts. What can I say :) - Citrix used to have XCP ( Xen Cloud Platform ), as a way of OSS the core functionality away from the paid functionality. They moved to one build in the possibly naive thought that making licensing a feature of a support contract, would enforce a social contract of "hey, why not pay these guys". That did not work. I think AWS moving away from XEN is a bit moot. While AWS did contribute back some to XEN, they mostly forked it for their use case. They are doing the same with KVM. Citrix has been by enlarge, the majority contributor to XEN.