Could this be the same as a tit for tat measure like with tariffs? China has banned a lot of US services and forced US corporations to pull content from their stores too [0] [1]. Genuinely asking and want to remain open-minded about this. 0: https://www.gadgetsnow.com/slideshows/10-popular-apps-and-we... 1: https://www.google.com/amp/s/www.news18.com/amp/news/tech/ch...
It certainly hopes to provoke a cycle of retaliatory escalation, because it's an election year stunt looking to distract from, well, a whole lot of other things with a manufactured international crisis to create a rally-around-the-flag effect.
It will probably fail as a political strategy somewhat less spectacularly than “let’s avoid having a national strategy to control the COVID-19 pandemic and behind-the-scenes obstruct state efforts because the early impacts are in Democratic-governed states and we can leverage the impacts for political gains by blaming the governors.”