There are some, but in practice I suspect the real competition comes from the major public cloud services in one direction and from more traditional but tried-a

There are some, but in practice I suspect the real competition comes from the major public cloud services in one direction and from more traditional but tried-and-tested IT infrastructure in the other. So far, products aiming for the middle ground, like OpenStack, just haven't quite found their mark. After this much time and investment, in a market where potential is trumped by pragmatism, it's not surprising that major corporate backers might start to look elsewhere for their future strategy.