Most ads I see against it claim that our taxes will increase because all the rich people will simply leave. And that it is to radical, should have gone with a far higher number than 50 Million and a lower tax rate. Pretty sure they would still say that no matter what the numbers are.

We are trying 50% above 50 Million in Switzerland right now. It does not have the slightest chance to become law. A huge majority of the population is against it even though it would basically affect no-one.