I agree with you but your rhetorical question isn't right. If you're Gates with several dozen billions, it is trivial to "earn several billion more dollars"; Bu

I agree with you but your rhetorical question isn't right. If you're Gates with several dozen billions, it is trivial to "earn several billion more dollars"; But if it means I have a 50% chance of losing 10 billion and 50% chance earning 7 billion I wouldn't do it. The same goes for groupon; From the outside it looks like the founders are risking their entire 5.3 billion for a mere 100% increase in a couple of years time. Of course, like other comments say, we know very little; but I do concur with the original comment saying it looks crazy.