On Thursday, China’s TikTok joined Meta in appealing against the “gatekeeper” status under an EU law that brings more rigid rules for tech companies and makes it easier for users to move between competing services. The European Commission in September picked 22 core platform services from six of the world’s largest tech companies — Alphabet’s Google, Amazon, Apple, TikTok parent ByteDance, and Microsoft — to face new curbs as part of an antitrust crackdown on Big Tech. The Digital Markets