If you have a tax %, the wealthiest will automatically give more money but it will still be proportionally. Also, not having too rich and too poor people is a

If you have a tax %, the wealthiest will automatically give more money but it will still be proportionally. Also, not having too rich and too poor people is a goal in itself - to move wealth from rich to poor creates a society where everyone is equal. Equal people are more happy and peaceful, and that is what it's all about.