Adobe and Microsoft have been talking about possibly collaborating against Apple or even a union between the two, sources said on Thursday. Their respective CEOs Shantanu Narayen and Steve Ballmer reportedly met for over an hour recently and discussed the possibility of teamwork to counter Apple's influence in the mobile world. Consultants and workers told the New York Times that they had gone so far as to float the option of Microsoft buying Adobe, although how serious this was isn't known.