I don't disagree that Disney's asking price, if true, is a bit much. It bothers me that this is being presented as 50/50 profit sharing and also 50/50 production split and those don't seem to me to be the same thing. Either way, Disney has earned it's position as getting the benefit of the doubt. Sony hasn't.
That might not be fair, but that is how the business world works. If Sony thought they could spin this as being Disney as the bad guy, they badly miscalculated.