All of the above is good stuff, until, reality bites back. In come the litigators, the legal authorities, the public cloud provider “Terms of Use” statements. The “take downs”, cloud service providers going out of business, the organization mergers/buyouts? Information owners who "thought" it was their data find out discover it's no longer the case not or access has been cut-off.

Take control of your own data. Bring it home. Use a “private cloud”. Eliminate/minimize the need for a public cloud. If some public cloud access is required then the private cloud becomes can be configured as a “hybrid cloud” (combination of the two).