> He doesn't believe Bezos would have not started Amazon in the US if there was a wealth tax.

Did he elaborate? That seems like such a joke to me. Denying yourself access to the world's biggest market because, if you make it big, you'll only have $145 billion instead of $188 billion...

Although it is interesting of course that Amazon was founded/located right from the start in part on a tax optimisation. I can imagine say a French entrepreneur may choose to incorporate in Germany to launch his EU startup (though even here, extremely skeptical) based on a (hypothetically) better personal tax system. But skipping the US? Highly improbable.