Or you can hold the marketplace companies responsible for whoever markets on them.
Of course can't hold foreign marketplaces responsible at all - but that is a different loophole we can close (if it becomes a problem Amazon will ensure it is)
Of course can't hold foreign marketplaces responsible at all - but that is a different loophole we can close (if it becomes a problem Amazon will ensure it is)
Regular people are not someone custom wants to make an example of for ordering from a banned foreign company. Large companies will carefully check their supply chain to ensure they are not buying goods from banned companies, but tiny companies and regular people won't care as much.
I expect that the EU will have (if they don't already have) rules similar to the US and countries there will generally enforce them. However other countries (China!) will not care as much.