Its not specifically established but its the only compatible ruling that the law can really make here. There is a lot of very similar precedence, there was a legaleagle on this which went through the likely legal outcome
* focusing on the US given this site and the outsized influence it has on global copyright
That's the same in the US/UK/AU/NZ/CA/DE/JP/IN.
The difference in the US is that SCOTUS basically made it impossible to restrict corporate spending on politics. That is what needs to be fixed in the US, not Corporate Personhood.