Earlier quoted context omitted.
> Of course you can, you simply reach for assets within the border of said member country or the EU. Which is exactly what I said. If the US company has an EU subsidiary you sue in that venue that can grant you relief. There are US tax implications of holding foreign assets, so the 1% of US companies with overseas interests create a foreign subsidiary, the other 99% have absolutely nothing within the reach of the EU.…
Let me make it simpler for you. If say Google were to not follow the GDPR for example, even if they didn't have any European subsidiaries, the EU or a member country would simply make all Google customers pay their subscription fees to them instead of Google as fine payment for the fine. Customers would see no service disruption.
Feel free to call up your credit card or power company and ask them what happens if you send them a payment but it gets seized by the government along the way. Their answer will be that you still owe them money.
In your example the EU customers would be out the money, not Google. With no EU nexus (in your hypothetical) they cannot compel Google to provide services they were not paid for.