Firstly, US courts have no jurisdiction in most places, so what.
The EU rulings thusfar have been even less restrictive - for example, the LAION ruling, which actually allowed scraping (within constraints).
And if even the US courts are ruling that training with US materials is legal, do you really expect a foreign court to ban training with US materials? And you actually expect that to do anything?
Wishing it wasn't doesn't change the fact that stuff written online has automatic ownership
First off, this is a myth. It's not "everything" that it is written that has automatic copyright, it is everything that is written that involves more than a de minimis standard of creative effort that gains protection. There is a huge range of things that fundamentally lacks copyrightability. It's not "everything".
Secondly, copyright does not make the owner a God to their works. It grants a limited set of rights. The boundaries of these rights get ejudicated by the courts. The very courts whose rulings we have been discussing above. "because...The Law" is what gets determined by the courts.
But open source AI is no such thing
Seriously, please stop what you are doing right now, go to Huggingface.com, and start browsing. This is a maddeningly ignorant statement.
Fifthly, do I personally care about open source AI? No.
Then you must love the idea of giant corporations and billionares controlling things far more than they even do today, because that is the future you get otherwise.
but I view current state of the art AI as statistical toys
LLMs work by chained logical inference.