" The CMA believes the Merger could allow Microsoft to make ABK [Activision Blizzard] content, including Call of Duty, exclusive to Xbox or Game Pass, or otherwise degrade its rivals' access to ABK content, such as by delaying releases or imposing licensing price increases," the regulator writes notes in a summary of its decision, noting this is known as an 'input foreclosure' concern, (i.e. where a firm uses its control of an important input to harm its rivals).