Leocomix wrote:

What's the sense in Kirby signing anyway in 1972 after he got out? None.
So he's a poor negotiator. Even when someone tells you "sign this or get out" there is room for negotiation. To start with, since he was a freelancer and not an employee, "get out" had no meaning.

Sure it did...Kirby was making his entire living from Marvel (albeit on a freelance basis). They were saying "Sign this or find another company to make a living from."