I don't think that very likely actually, if coins haven't moved since 2011 or 2012, it's hard to believe that someone still has control over the wallet in question.
In the early days of Bitcoin, people didn't mind too much if they lost access to a wallet containing hundreds or thousands of Bitcoins.
You wouldn't mind either if you just lost the equivalent of 10 or 20 dollars.
It's just so unlikely that someone would have been able to hold onto all the coins they had if the price suddenly went up 1000% or more.