Over the past couple months, luxury powerhouses LVMH (Louis Vuitton, Dior, Givenchy, Fendi), Kering (Yves Saint Laurent, Gucci, Balenciaga, Alexander McQueen), and the Ralph Lauren Corporation — all multibillion-dollar conglomerates — announced significant sustainability initiatives. French president Emmanuel Macron has even gotten involved. And if they achieve the goals they've set, they're in a position to actually make an impact.