It seems people primarily listen to music on headphones whether it be Apple's Earpods, Beats, or some sort of skull candy headphones. Or they listen to it in the car where the stereo sound field isn't properly set up. (Can't really be in the sweet spot when the speakers aren't in proper positions nor is the driver in the center of the speakers) I hardly see any average Joe listen to it on a proper speaker set up. Even when I do see people with bookshelf speakers or floorstanders they are not properly positioned. So wouldn't you think they would eventually start the shift towards mastering more with headphones in mind?