People forget this has already happened, more or less. In 2011 Google blackholed Belgium's newspapers when they got uppity. Pretty sure it happened a few times before that as well.

https://tech.slashdot.org/story/11/07/16/0028255/belgian-new...

Also, many years ago, Google ghosted CNET because they didn't like their reporting. They didn't blacklist them from results, but it was an option.

https://money.cnn.com/2005/08/05/technology/google_cnet/