At that time, bitcoin is less than a penny and nobody knows at that time that it will reach a high amount now. Do somebody knows that bitcoin will reach almost 20k$ in 2017? None right that is why Laszlo used bitcoins in ordering for pizza. Yeah I think it is a great loss for him until now but because of what he did, he created history in the world of bitcoin. 
That is greater achievement than buying a pizza that is worth around 75 Mil Dollars.
Yes, I agree no one would have hoped bitcoin would get to $20k at the time but how would you feel now, knowing that it got to 20k and you spent it all on two pizzas? That is greater achievement than buying a pizza that is worth around 75 Mil Dollars. He must be the most lucky person in the world and he is lucky because he still hold it until such time that it grows, who would have thought that bitcoin could be a thousand dollar worth right? for sure, he does not expect it and now enjoying the fruit of everything.
I'm not sure if I understood correctly what you're saying but if you're refering to the guy that got the bitcoins, he sold them when they were worth $400 in total. So, still way too expensive.I think this experience should be a good lesson learned example to all of us. Never sell all your assets and do still keep some.