The copyright holder / publisher can prevent any publication of books it holds copyright to, and has done so.
Distributors of books, like Amazon, can stop selling books they disagree with, and have now starting doing that too.
So the answer to your question is: all the above.
The copyright holder / publisher can prevent any publication of books it holds copyright to, and has done so.
Distributors of books, like Amazon, can stop selling books they disagree with, and have now starting doing that too.
So the answer to your question is: all the above.