Wikipedia
Clientitis (also called clientism or localitis) is the tendency of resident in-country staff of an organization to regard the officials and people of the host country as "clients". This condition can be found in business or government. The term clientitis is somewhat similar to the phrases "gone native" or "going native".
A hypothetical example of clientitis would be an American Foreign Service Officer (FSO), serving overseas at a U.S. Embassy, who drifts into a mode of routinely and automatically defending the actions of the host country government. In such an example, the officer has come to view the officials and government workers of the host country government as the persons he is serving. Former USUN Ambassador John Bolton has used this term repeatedly to describe the mindset within the culture of the U.S. State Department.
An example from business would be a representative for a company living in another nation, representing that company to the host nation and other institutions in that country. A business representative suffering clientitis would defend the host country government and operating environment as if those were his employers.