Key TakeawaysThe U.K.'s antitrust watchdog closed investigations into Alphabet's Google Play Store and Apple's App Store.The Competition and Markets Authority (CMA) said it expects concerns to be considered under a new digital markets competition regime instead. Google also faces scrutiny from regulators in the U.K., the European Union, and the U.S. for its artificial intelligence (AI) partnerships.U.S. regulators are investigating Apple for similar grounds to the CMA case. The U.K.'s antitrust watchdog age ...