This message board is not a random sample -- not at all! People who (a) come to this board, and (b) read and vote in topics that aren't about their particular issue or question, are more likely than users of Eschalon at large to be very interested in the game, more likely to be impressed by it, more likely to be invested in its success.
I think it is probably safe to assume that the kind of people who are going to pirate it are not well represented on this board. I don't think there are tons of them, and the poll may not be that far off; but it would be a big mistake to take it as a representative sample. It's not.