Why isn't HR transformation more successful?

"Why isn't HR transformation more successful, either in an outsourced or insourced environment? In many instances, HR directors are reluctant to give up transactional HR in the belief that transactions are an important link to the business. Another reason: Companies that leverage an outsourcing provider often fail to redefine new HR roles adequately enough; instead of delivering new kinds of value, the retained function more often simply serves as a check on the outsourced organization."

Revolutionizing HR Transformation for Business Impact
By Marc Sotkiewicz and Edward W. Jensen, Outlook Point of View April 2007, No. 2