If I was his place, I would have remained invested and purchased the whole company after 10 years. That will be possible when Bitcoin reaches 10 million mark or more in future.
I don't know how people even think like this, do you really think it's possible for Bitcoin to reach 10m per coin or is that just a weird joke that everyone goes ahead and says. If Bitcoin was to go that high it would need pretty much everyone involved in traditional markets, banks, governments, etc to go ahead and invest in Bitcoin for it to even COME CLOSE TO THAT MARK.
It would never do such a thing because people would just be insanely rich when they bought at low amounts. It would make little to no sense.
I'll say that the story from CNBC is pretty cool though, glad to see people doing well with their bitcoin riches!