This would be a huge improvement for made-and-sold-in-Europe, and would at least make a sizable dent... but the rest of the internet still exists, and doesn't care where the botnet devices are made or installed, only that they exist.

Still, yea, this is exactly the kind of thing that needs to become commonplace. Hopefully it will be, though this is far from the first time that something like this has happened and here we still are.