There will be a day.. when the price has stagnated for too long, and a hacker who stole the mtgox coins (or some other hacker/scammer/drug dealer from the past, for that matter), feels that this is as good as it gets, and then he starts to dump his coins. And this in turn will invite all the other past criminals to dump their coins because they don't want to lose their promised wealth.
Most of the bitcoin cultists don't understand the psychology of criminals. They usually don't think long-term and they go after quick fixes. I highly doubt it that many of them are as fanatical about bitcoin as the people here are. The only reason why they haven't dumped their coins yet, is that there is hope that the price will rise more. This has made bitcoin into an asset, that's value has to be constantly rising or else it will face doom.
Your assuming the coins got hacked to begin withMost of the bitcoin cultists don't understand the psychology of criminals. They usually don't think long-term and they go after quick fixes. I highly doubt it that many of them are as fanatical about bitcoin as the people here are. The only reason why they haven't dumped their coins yet, is that there is hope that the price will rise more. This has made bitcoin into an asset, that's value has to be constantly rising or else it will face doom.
I consider it naive to think that the coins just got lost and isn't controlled by someone.
The lack of interest, that the majority of bitcoin speculators show towards finding out what happened to those coins, shows how immature the market really is.