Have companies been able to realize the promise of SOA?  Here is the proof

Financial
        Bank of Baroda
        First Horizon
        Guardian
        Helvetia Patria
        Synovus Financial
        AFLAC Inc.
        Standard Bank South Africa
        Large Australian bank uses SOA for introducing new products
        Large Scandinavian bank uses SOA to reduce personal loan origination process
        Large European bank uses SOA for addressing compliance
        Penn National Insurance
        ING
        KBC Group
        Thomson Financial
        Transamerica Life Insurance
        Centraal Justitieel Incasso Bureau (CJIB)
Government
        NATO
        Ministry of Transportation and Water Management, PS
        U.S. Department of Defense
Healthcare
        Kalmar County Council
        Leading Pharma company
        Canada Health Infoway
        Healthcare Major Client
Information Services
        Experian
        R.L. Polk & Co
Manufacturing
        Cadbury Schweppes
        Large automobile manufacturer uses SOA Governance to increase agility
        Corus
        Large automobile manufacturer uses SOA to offer Mobile Services
        Södra Cell
        British American Tobacco
Retail
        Wine.com
        Staples
Telecommunications
        British Telecom
        Telecom company based out of APAC
        Verizon    
Utilities
        Austin Energy
        Pacific Gas & Electric Company
Media
        Hubert Burda Media
Oil and Gas
        Valero Energy
Safety Industry
        Federal Signal
Transportation
        Con-way, Inc - SOA and EDA Evolution
        Sabre
Technology
        SunGard Financial Systems
Psychology
        SmileMiles

All the 46 case studies aross the 14 sectors can be downloaded in a nicely compiled single download.  The download contains pdf prints of webpages where the above information has been sourced.  You can buy it now for a nominal charge of $10

The individual websites/organization retain the copyright to the material.