I can't imagine how can someone be holding this much Bitcoin for so many years. When you have 80K Bitcoin and the price of the coin reaches 20K USD in 2027 or 70K USD in 2021, you'll at least sell one Bitcoin and spend that year very nicely. I believe that someone accidentally discovered keys or they had a wallet and lost the last 2-3 words and cracked it via brute force. If there really is someone out there who holds Bitcoin for 14 years, doesn't sell single coin and doesn't even think about to sell the coin when the price is at its peak to later buy more, then this man deserves The Nobel Prize for his patience.
It seems like the reason is quite reasonable, that the person lost the key and could only open it after several years or maybe his life is so secure that he does not need the benefits of bitcoin or what is meant by the bitcoin he owns is already considered a valuable collection but it is indeed very surprising with this phenomenon, imagine 80 thousand bitcoins in hand, I don't know what to say but what is clear is that the person's life will definitely be safer and last for several generations if he only relies on bitcoin alone.