Xbox has announced it is splitting from four of its development studios – Compulsion Games, Double Fine Productions, Ninja Theory, and Undead Labs – while announcing plans to reduce headcount by over 3,000 employees over the next several months. CEO Asha Sharma sent a lengthy message to the entire Xbox team detailing her previously announced plans for a “reset” of the brand and its operations in what she calls “the most significant restructure in Xbox history.”“Our business today is not healthy,”…