Talent may want to pay taxes. Voluntarily.
In the interim, I think there would be a solution where some core taxes (say 50%) are set for certain levels of service like now, but the other 50% is self-applied to what is interesting to the person. For example, if a country government wants to go to war, they can only do so if the funding comes out of that 59% self applied tax, which means that they would have to convince enough people to spend their tax money on war, instead of building parks in their neighborhood, or increasing nursing staff.
The percentages are relative and the reality is different. For example, in the case of Ukraine, foreign investment has been far greater than that invested in World War II, and after more than a year of war, the policies adopted have not yielded results. All of this is questionable, and the variables to be dealt with are impossible to control, which is the basis of the "Chaos Theory".
But, if people had to donate to Ukraine out of their pocket, would they? And then, if Russians had to donate for the government to attack Ukraine, would they? very unlikely.