3) The present social model is mismatched to CEOs.
The average age of the world's top 100 CEOs is 59. This places them in the "typewriter and whiteout generation" -- many years removed from AOL Instant Messaging, Facebook, text messaging, and other early and late social technologies. Current CEOs lack affinity, knowledge, and comfort with social -- limiting their usage.
CEOs face unique constraints. Their companies possess carefully crafted messages emanating from public relations, advertising campaigns, and investor relations -- a CEO could dilute or scramble these messages in a weak blog or Twitter moment. Regulatory issues surround the CEO -- Sarbanes Oxley, Regulation Full-Disclosure ("Reg FD"), FTC guidelines, European Union regulations -- which limit his ability to speak his mind. CEOs always seek to minimize risks of litigation, loss of intellectual property, offending customers, offending investors, angering employees -- all increased with a social profile. Imagine if Lloyd Blankfein, the CEO of Goldman Sachs, was blogging from 2004-2008 about the high quality of his company's investments -- those posts would be Exhibit A in any case against Goldman.