Sure, but Openstack-based public clouds are in short supply (unfortunately? fortunately?). I think the short explanation is that pure OSS stacks limit providers ability to move fast and differentiate. So it’s a race the bottom for Openstack-based providers. (Rackspace’s gambit was quite different, as they were arguably trying to do exactly that.. comoditize cloud services.)
No the short explanation is that no one is able to put in their cloud the same amount of money that Amazon, Microsoft and to a lesser extent Google do.
