Now both Corbis and its larger rival, Getty images, have gone through bouts of layoffs. To some extent this was inevitable. Both companies were built through acquisitions of many smaller agencies, resulting in some overstaffing. But the new Corbis plan represents something more, and perhaps more momentous. The company is betting (pretty much everything at this point) in the future of stock. Getty has taken a different approach. With revenues from its stock business pretty much flat recently, it has been leaning harder on other divisions, including its editorial and celebrity assignment businesses.