While Netflix controls subscription-based online video, Apple dominates online video purchases and rentals in the U.S., according to a new report from the NPD Group. Apple’s iTunes held a commanding lead in both categories during 2012, reaching unit shares of 67 and 65 percent for online TV Show and Movie purchases, respectively. Microsoft’s still developing Xbox Video service and Amazon’s Instant Video took third and fourth place in terms of digital purchases. Online movie rentals were also controlled by Apple,