How does the blender manufacturer Vitamix get away with charging $700 for a blender when reputable companies such as KitchenAid make blenders for less than half of that?
It is because Vitamix specializes in one thing, and they do it better than anyone else.
WhatsApp was just a messaging platform before Facebook acquired them for $19 billion US. Go Pro produces the best helmet mounted video cameras in the world. These companies stand out because they poured all of their limited resources into one big bet.