I think you have the Bitcoin pizza story mixed up. Laszlo did not exchange $10,000 worth of Bitcoin for pizza instead he exchanged 10,000 Bitcoins for the pizza. At the time the 10,000 Bitcoin wasn’t even worth up to $50. You can check the post here: https://bitcointalk.org/index.php?topic=137.0. Also, I don’t think that the person who got the 10,000 Bitcoin still has it. It’s possible but the chances are really slim because Bitcoin merely being $1000, that’s a lot of money that the average person may want to have cashed out.