Anyone who has access to Satoshi's account is worth $100B. If Satoshi were still alive some of the BTC would have been moved at least a little but they haven't.
There was no guarantee that Bitcoin would take off. It may be tough to imagine looking back in retrospect but, in another world, Bitcoin could have turned out to have been another digital currency with limited value. Many people lost their keys in the early days when Bitcoin was worthless. It's not unreasonable to think the same wouldn't have happened to Satoshi. He may have also thrown them away on purpose.
There was no guarantee that Bitcoin would take off. It may be tough to imagine looking back in retrospect but, in another world, Bitcoin could have turned out to have been another digital currency with limited value. Many people lost their keys in the early days when Bitcoin was worthless. It's not unreasonable to think the same wouldn't have happened to Satoshi. He may have also thrown them away on purpose.