Looming TikTok ban poses financial nightmare for Google, Apple — and other American tech firms ties to China's ByteDance

1. Supreme Court upholds TikTok ban, affecting Apple and Google's operations. 2. Potential fines for non-compliance could reach $850 billion for Apple and Google. 3. President-elect Trump may delay enforcement, influencing potential sales negotiations. 4. Companies like Apple face pressure to sever ties with TikTok amid security concerns. 5. Existing users can use TikTok, but service may degrade over time.