It’s now possible to sell a new product to hundreds of millions of people without needing many, if any, workers to produce or distribute it. At its prime in 1988, Kodak, the iconic American photography company, had 145,000 employees. In 2012, Kodak filed for bankruptcy. The same year Kodak went under, Instagram, the world’s newest photo company, had 13 employees serving 30 million customers. The …