But if they already do it, which clearly they do and in anticipation of future legislation, what's the problem
If their only market was the EU, you might have a point...
I think your missing the point, as an example if you want to ship and sell into South Korea and have EU approvals and are a member state (so under EU law), you can sell without getting additional testing to local regs, if you are not a member state, you need now to re-approve against local regs.
Passing the regs is low risk, spending 7 figure sums and taking a sales hit for 12 months is a big issue.....then you add in all the other countries where the same applies....