Let's cut to the chase here.  Sony makes brilliant sensors.  They understand video at a level not found in many other places.  While the company struggles in other lines of business, Sony's photo business continues to do well.  Despite false starts like the failed smart phone clip on lens/camera, Sony gets Compact System Cameras (CSC)  Continued evolution of their lines has produced a series of winners.  Recently they released the A7 Mk II, a mirrorless with high megapixels and superb dynamic range.  So why isn't the world going to Sony?