Brandon Butler writes: "OpenStack has no shortage of corporate backers. Rackspace, Red Hat, IBM, Dell, HP, Cisco and many others have hopped on board. But many wonder, after four years, shouldn't there be more end users by this point? 'OpenStack backers say this progression is completely normal. Repeating an analogy many have made, Paul Cormier, president of products and technology for Red Hat, says OpenStack’s development is just like the process of building up Linux. This time the transition to a cloud-based architecture is an even bigger technological transformation than replacing proprietary operating systems with Linux. "It’s where Linux was in the beginning," he says about OpenStack's current status. "Linux was around for a while before it really got adopted in the enterprise. OpenStack is going through the same process right now."'"