> I tried to convince the CEO of Research In Motion, who I worked for, that WhatsApp would end up destroying his business. He thought I was insane for thinking something so small and simple could have such a big effect on his big, important company. Yeah, well, whatever you say, man.

Well, he had a point. What killed BB was the iPhone, not that their chat app was going to lose out to the competition. They simply had a product that was inferior in every single important way.