Emad Mostaque stepped down as CEO of Stability AI, the developer of the Stable Diffusion image generation tool, over the weekend, saying he wanted to “fix” the concentration of power in AI. The company said he had also quit its board of directors, which had appointed COO Shan Shan Wong and CTO Christian Laforte as interim co-CEOs while seeking a replacement for him. Board chairman Jim O’Shaughnessy thank Mostaque for “his leadership and relentless commitment to Stability AI and the open source movement,” in a statement confirming the changes. On Twitter/X, Mostaque said that his shares of Stab…