For the reasons you have mentioned in your posts including The Cloud Hits the Mainstream: More than Half of U.S. Businesses Now Use Cloud Computing, where many excellent points are made with regard to enterprise adoption ofcloud computing, venture capitalists are treating this area as one of their highest priorities.
Research posted last year by Lydia Leong, Research VP at Gartner, points to some of the challenges facing Cloud providers, specifically within the OpenStack community.