You're suspecting wrong. In the sense that less public goods and services are funded today on a global scale due to facebook tax evasion scheme.
Even with a 99% tax on Zucker's fortune, it would still be diverting money from countries around the globe towards the US, in other words the already rich and destroying condition favorable to human life USA would get richer by making the poor poorer.
In a world with no countries, it would make sense. In the current world it would be another way for the USA to abuse and exploit the rest of the world.
If we had that and still had charitable deductions, I suspect more public goods would be funded by charity rather than public decision-making then is now the case, since the marginal cost of charity giving would be much lower.