Have you considered that life in prison has more value than being dead?

I didn't post that because it was about capital punishment, I posted it because I thought this particular anti-capital punishment argument was relevant to the Allais problem. I don't see how life in prison being more valuable than being dead is relevant to the Allais problem.

What if there were no life sentences? Of course you can still die in prison for whatever that's worth, but the chance is significantly smaller.

Insofar as that's relevant, it just changes the values of X and Y; the absolutist "we can't do it because an innocent may be exonerated only after he is killed" position still has the same flaw.