Metro-Goldwyn-Mayer's emblem, which has opened thousands of movies since 1924, is the most recognized corporate symbol in the world. Not just in the entertainment industry, it should be noted, but of any industry, anywhere, in the history of human civilization. But MGM has been a competitively insignificant force in the motion picture industry for nearly as long as it once, decades ago, dominated that industry. In fact, the MGM lion now presides...