TikTok's grip on the short-form video market is tightening, and the world's biggest tech platforms are racing to catch up.Since launching globally in 2016, ByteDance-owned TikTok has amassed over 1.12 billion monthly active users worldwide, according to Backlinko. American users spend an average of 108 minutes per day on the app, according to Apptoptia.TikTok's success has reshaped the social media landscape, forcing competitors like Meta and Google to pivot their strategies around short-form video. But so ...