At the end of the day, it goes back to the other old chestnut of same old stuff, playing safe, getting the punters on the dance floor, fear of mixing it up and being remembered as the dj who cleared the dance floor etc.
At Derby, for me, the cameras on the decks gave an extra dimension to the music, which would not have been fulfilled by a succession of Stardust lables. The majority of people going out at the weekends don't give two hoots about the originality (in all senses), although strangely, still demand vinyl. Roll on the proliferation in recent years of copies of anything and everything it seems. Supply and demand. More available copies, legitimate or not, means more plays, more likely to get overplayed, more stagnation. Each to his own. Try Youtube.