True enough. While maybe not "warring" per se, but if you run a division that is required to turn a profit, you sell your parts/services for what the market will bear. Unless your revenues are rolled up with other internal groups, there is no reason to prioritize in any way other than ability to pay. If your internal customers want premium parts and animosity is not a factor, they can change their price-points and pony up the bucks like everyone else. And believe me, this happens all_the_time in the free market world, from individual employees within a firm competing with external sources to do a job all the way up to where a country chooses to sell the resources it rips from its own land. Highest (or in the case of employees, lowest) bidder wins. In the case of Samsung and Apple, it is not out of the question that Samsung could not afford Samsung parts for the price point that it wants to sell its Galaxy phones at.