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.  

Video-sharing platforms, such as YouTube and Facebook video, enjoy a light-touch regulatory regime for harmful content and advertising. As video viewing of non-broadcaster content grows, the regulatory gap between TV broadcasters and video-sharing platforms widens, part of a broader uneven playing field for publishers and platforms.

However, there is momentum against this: the “platforms vs publishers” divide looks set to weaken in EU law, and the platforms themselves are investing more in combatting harmful content within a self-regulatory regime, though their internal policies and outcomes are still opaque.

Effective and fair regulation of video-sharing platforms would involve the balancing of national freedom of speech conventions and the public utility of user-generated video hosting with concerned stakeholder views: something approaching a co-regulatory system for online video-sharing platforms.