If you merely want to afford a good life, you don’t need excess wealth.
If you want to ensure you have maximum power and control over others, there is likely no limit to the wealth you will be satisfied with.
Imagine for instance if you were a massive deca-billionaire, you could just pick a random person off the street and make them a multi-millionaire with the same ease that someone fills up their gas tank. In a society where money runs through everything, this is a god like power.