That's a serious downer. It's not even a consolation to mention all the taxes you'd owe.
Seriously, did you think it was a good racket 12 years ago. In other words was your lack of cash the only reason you didn't buy in, or did you also think it was too high-risk a venture? The ones that pay off that way usually are high-risk going in.
But hey, somebody wins the lottery every day. Not everybody buys a ticket. Just move on.