The way I see it, Comcast/Universal needs Fox more than Disney does. Disney is already ahead of Universal's movie studio by a long shot. If the AT&T/Time Warner deal goes through, I'd expect Murdoch, Fox, and Sky shareholders to take the higher offer from Comcast because of the alleviated regulatory concerns. Disney would be stretched thin if they were to outbid Comcast's $60+ billion offer, so I doubt they'll take that risk.