Yeah.. they tried that in Venezuela and look at where they are right now. This strategy could have resulted in limited success a few decades ago. But nowadays it is very easy to move your assets from one country to another and to attain citizenship of smaller island nations where there is no income tax. If the government introduces confiscatory tax policies, then the rich are going to simply migrate to some other country, where the tax rules are more sane. And let's not forget what happened in France after François Hollande introduced the 75% tax for super-rich.