Billie Eilish had no problem being the "bad guy" at Wednesday's WSJ. Magazine Innovator Awards ... calling on the billionaires who sat before her to give away their money! Check out the video -- the musician boldly addressed the ultra-wealthy folks in the room as she accepted her Music Innovator Award at the New York City ceremony, saying ... "I love you all but there's a few people in here that have a lot more money than me ... and if you're a billionaire, why are you a billionaire?" She went