We learn via email today that California firm WWCOT has been taken over by midwest mega-firm DLR Group. WWCOT's offices in LA, Modesto, Palm Springs, Riverside, and Shanghai will be known as DLR Group WWCOT. The merger, says 500-person DLR, will give the firm a needed presence in California and Asia, and improve its education, healthcare, and senior community design. Like most businesses, architecture's biggest firms are interested in the takeover, which gives them more geographic reach, more talent, and more clients. This move follows behemoth firm AECOM's purchase last October of Ellerbe Becket, and in 2007 RMJM's purchase of Hillier, and Arcadis' purchase of RTKL. According to a 2009 survey by business management consultant ZweigWhite, Seventy-one percent of architecture, engineering, and environmental consulting firms plan to conduct a merger or acquisition in the next five years. Sounds high, but maybe there will be one giant firm running all of architecture the next time we check?