I think those market share numbers are suspicious.. according to rackspace they had 1.3b in sales of private cloud and public cloud services in 2012: http://ir.

I think those market share numbers are suspicious.. according to rackspace they had 1.3b in sales of private cloud and public cloud services in 2012: http://ir.rackspace.com/phoenix.zhtml?c=221673&p=irol-newsArticle&ID=1784359&highlight= http://ir.rackspace.com/phoenix.zhtml?c=221673&p=irol-ne... So either the total is more than 100% market share for the 3, or those numbers or wrong. Edit: added "in 2012" for rackspace financials