Quote from newtricks:
WRONG
What legal power to they have impose the tax on say a US citizen trading Bund futures if they were listed on say the CME?
They have none.
But they can tax a German who trades Bunds anywhere in the world.
So that is might point, there is some advantage of moving eurex outside of Germany for non German traders and it will also give the German traders the option of packing and leaving to avoid the tax too.