There must be some kind of "take the membership fee and run" business strategy out there. On American's website:
Admirals ClubŪ and AAdvantage Platinum Service Center Closings
In response to the recent tragic events and the current state of the airline industry, regretfully we have closed six Admirals Clubs and five AAdvantage Platinum Service Centers indefinitely. The Admirals Club locations are Cleveland, Detroit, Honolulu, George Bush International Airport in Houston, Nashville, and Phoenix. Additionally, while we have closed the Miami Concourse D Club, we have opened a temporary Club on the B Concourse and continue to operate the Club on Concourse E. The AAdvantage Platinum Service Centers that have closed are located at Chicago O'Hare, Dallas/Ft. Worth Terminals A and B, Miami and San Juan, Puerto Rico.