Strange but in a career of 42 years never came across a Captain like that. I suspect that these guys are not greedy but insecure in their positions, frightened that a P2 will cock it up and they will get the blame.
I have to say now that I am the reverse and tend to say to the First Officer that I will do what ever sectors he does not want....I have to say they offer me just less than 50%, so I can safely say I do not employ greedy First Officers!