Here the true treasure is the "endurance and patience" of the owner of this wallet, who, during these long, almost one and a half decades, seeing all the ups and downs of bitcoin, despite everything, kept faith in this asset and continued to store it.
...
Another scenario is that the wallet had some weaknesses, like poor entropy, and some smart bastard with a lot of horsepower, good coding skills, and a bit of luck managed to find its private key of this lost in time coins.
But I do believe he could have held it all this time, as I have been holding a big stash myself for almost a decade, treating it like my bank account and It's so much I'm unable to spend even a small fraction of it in my lifetime.
Except no one knows when I'm using it or how much I have, as I'm using Monero. 
I would feel uncomfortable (to put it mildly) seeing posts like this all over the internet about my personal account.
Life's good
