It does make the point that it's important to differentiate short-term and long-term risks and benefits, and teach business-unit managers about them.
Basically it becomes a balance between how much flexibility IT can give the business units using cloud, without costing so much in contract management, service duplication, integration and additional security that can't move as quickly as necessary on longer-term migration.
Buy SAAS, aim for IAAS, essentially, and hope not to get outsourced in the meantime.
It's a good thing most IT people got into this area because they love corporate politics so much. It's going to be a much bigger part of the job during the next few years.