This looks like a cost saving maneuver to me. Why do the heavy innovation lifting on your own proprietary virtualization technology when you can have the community do it for you, for free? You can layoff several high-cost developers and stop innovating while extracting as much money from your current customers as possible.
I think monocultures in technology are dangerous and stifle innovation and its how we end up with the situations like nearly every browser is now built on Chromium.