How Fox's 'Empire' became so big

Many fans of this television season's biggest breakout hit, "Empire," are surely going to watch Wednesday's finale "live," at the very moment it's premiering on Fox.But "Empire" didn't start out that way. Much of the credit for the show's success must be given to on-demand TV options that barely existed a few years ago. There are half a dozen ways to watch "Empire," and all of them have contributed to its total audience of 20 million a week."Empire" has been the No. 1 TV series on Comcast's video-on-demand system ever since it debuted in January. The cable provider's latest weekly chart, on Tuesday, was titled "'Empire's' on demand dominance continues."