This still works because you haven’t gone too far. You kept it at a reasonable rate where moving is less advantageous than paying higher taxes. At some point, this will shift.

Here are some examples:

1. Burgerking moving to Canada
2. Medtronic moving to Ireland
3. And here are some tax heavens: https://www.oxfam.org/en/press-releases/fifty-biggest-global-us-companies-stash-13-trillion-offshore