Kudos to him, hopefully he will go all in on some crazy idea eventually. I still have this feeling amazon (as in online store) isn't all that big outside of US/english-speaking world.
I do have a question though. When you have that much net worth and you get plastered all over the press about how much you have... What do you do then? What's your life then like? Seems like a nightmare, especially if you have kids and family. Do you become a prisoner of your own wealth then, guarded by people - never be able to just roam about, take a random tourist tour with your spouse, a road trip or whatever? Money is nice to have, but there are things you definitely lose, it seems. Is it worth it to be at that level?