Don't think he owes anyone a penny. If he had cocked it up I don't suppose anyone of them would have been helping him financially in "retirement".
Finally, his contribution was his contribution, & his lucidity and foresight has got him the publishing deal , nobody else.
Nothing to stop the others doing the same if they feel able, and think they have a different/more interesting take on things.
Think the cash should stay in HIS account, but then I am a Scottish Skinflint, so what do you expect
