An important deadline just passed for the biggest tech platform companies in the world to notify the European Union (EU) that they are gatekeepers under the Digital Markets Act (DMA). Seven companies have officially acknowledged they meet the criteria: Alphabet (Google), Amazon, Apple, ByteDance (TikTok), Meta (Facebook, Instagram, Whatsapp), Microsoft, and Samsung. Companies on the list have a market capitalization of over €75 billion ($82 billion) and own a soc...