What does "hoard wealth" mean to you? A vault full of gold that they swim in?

Jeff Bezos's net worth is mostly in the form of server racks and amazon inventory.

Elon's net worth is mostly in the form of share certificates that are marked to market and contingent on delusional investors swallowing Elons own promises.

This is the peg that society is constantly snagging on. The billionaire class doesn't actually have much "hoarded" wealth. If we want to go after wealth that more classically fits the idea of "hoarded", i.e. cash and cash equivalents, then the middle/upper middle class is the golden goose (most people are surprised to learn they have almost twice the wealth billionaires have too, not a very clickable headline though...)

The idea that everyone gets a suburban house and premium healthcare if we can only pass legislation that taxes billionaires, is a delusion on par with Jesus coming down to battle the transsexuals.

The actual strain in the economy is between the upper middle class and the lower class. The senior developers and the shipping room clerks.