You never know. There's an outside possibility. The numbers of folks who were around when it was worthless enough to delete are pretty darned low but even 2011's dust is still a nice bonus.
You must get a fun occasional consolation prize of photos of the hard drive owner taking his saggy old wife up the shitter while she's bent over the washing machine.
I know a couple of people who claim to have mined a bunch and then to have repurposed/reformatted the hard drive. There have to be more out there just forgotten but it's a crapshoot probably smaller odds than finding a silver quarter.
I bet you there are thousands of lost coins. I wonder if anyone takes that into consideration when thinking about how many BTC there are. Of course its hard to verify that if coins are "lost" but I think that if they have not moved for many moons then well... they are pretty much lost. I mean if going over 1k USD did not even tickle your urge to sell some of your thousands of coins... i dont know what the heck would.