The researchers at DFC Intelligence believe that the Xbox One and PlayStation 4 will both reach 100 million units sold. The original Wii which launched back in 2006 exceeded the 100 million units sold mark. The firm expects PlayStation 4 and Xbox One to reach the 100 million units sold by 2020. The company says it has modeled price cuts into that, but think they will happen fairly slowly. DFC says things could change if a new console was added to the marketplace.