The stolid silence of Sony's Tokyo headquarters over the hoopla surrounding Sony Pictures Entertainment's "The Interview" underscores the longstanding divide between the Japanese parent company and its U.S.-led and -run motion pictures subsidiary, successor to Columbia Pictures. Marrying the cultures of Sony Corp., a quintessentially Japanese company, and its Hollywood studio was such a challenge that company founder Akio Morita and his successor as chairman, Norio Ohga, never really tried, analysts say. Since the late 1990s it's been run basically as a stand-alone business. Sony Corp.