If, as a company leader, you did not lose a heartbeat over the bankruptcy filing of Kodak, Barnes and Noble, Blockbuster and AMR Corporation (American Airline’s parent) or Google’s pending purchase of Motorola phones, you should have. When previously solid businesses run out of cash, there are lessons to be learned. In particular, never forget the vital strategic question, “What business are we in?” Too narrow an answer, like Kodak’s “film” or Blockbuster’s “video store,” positions your business to be disrupted by a better solution. Look what stand-alone digital cameras and smart phones have done to film or what Netflix’s more convenient mail-order DVD model did to Blockbuster. A change in consumer preferences also leads to disruptions as Netflix found out with the surge in on-line media streaming. Too broad an answer to the question “What business are we in?” or an out-of-touch-with-the-market…