I've never understood that. If the EU bans a substance in one of your products, stop selling that product in EU country stores. Keep selling it in the land of the free.
If they want to break their own laws by coming over here and buying one, that's their problem.
It'd be the same* as Apple saying, "Well, since there are already iPhones in countries where we're not selling them, we'll just not officially sell them there at all."
Or, in other words, one bad continental conglomeration spoils the whole bunch.
*It's not the same situation, but it's a similar mindframe.