TikTok has been dealt a devastating blow as a US bill has been signed into law forcing owner ByteDance to sell within a year or face its removal from app stores. 

The stakes are higher than in 2020—China's opposition to a divestment will make an optimal sale harder to conclude, so all sides must be prepared for a ban.   

The TikTok bill introduces extraordinary new powers in the context of the US and China's broad systemic rivalry, though online consumer benefits will be limited.  

ByteDance is rushing to sell a 20% stake in TikTok Global to Oracle and Walmart at an enterprise value of $60 billion. TikTok otherwise faces a ban in the US on 12 November, subject to legal challenges.

The sale hinges on ByteDance obtaining approval from China to export TikTok’s core technologies. China updated its export control rules to include algorithms (and AI), entrenching a tech cold war with the West.

TikTok has confounded regulatory woes in India and the US, and renewed competition from US tech, to post dizzying user growth in every major internet region where it is available, casting off its image as a niche youth product and entering the mainstream.