[jwilliamson]

To further this, American apps like LinkedIn or Github are still allowed in China because they obey the law.

[z_]

What does the law require of foreign corporations to operate in China?

The requirements may have been too steep for others e.g. source code disclosure.

[jwilliamson]

Facebook was banned after they refused to identify rioters who were using Messenger to communicate. Google was banned because they wouldn't comply with content restrictions.