Whenever I see something like this I always wonder what the total would be if they performed the same "analysis" for every company in existence. I have a suspicion that it would come to a bit more than the $77tn of global GDP. To be honest the whole stock market scares me on a daily basis. It only seems to work because everyone has a vested interest in pretending that these stocks are worth the money being asked. Who knows what will happen if a radical idea like value being associated to actual real output ever takes hold.