This isn’t unusual. Everyone from Beyoncé to Bruno Mars has headlined the event and performed essentially for free. As in the past Super Bowls, Maroon 5, Travis Scott and Big Boi will get union scale, a fraction of the six- and seven-figure sums these acts have banked on a nightly basis. Why work for a pittance? They do get to be in what amounts to a massive commercial in front of over 100 million people—without having to front any of the costs, which have been estimated as high as $10 million……….