No country should be able to cut off anyone else's sunshine (or Internet). Internet, the western version of it, was not built and shared with the world with this disclaimer that we will cut it off if we feel like it.

If ICANN kicks out a country, we'd very soon see the end of ICANN because other countries will have no trust left in the organization.

With the Great Firewall, the Chinese have developed its own sunshine. Less quality, but sufficient for most people nonetheless.