[yndoendo]

This is false assumption that billionaires are useful. You don't need billionaires for companies to provide common good. Billionaires are more likely to buy up existing companies to maximize their profits than create anything new.

Unions prove you need collective bargaining to prevent exploitation.

Billionaires are hoarding money, how else do they get that amount of wealth?

Billionaires exploit their monetary power to create and manipulate both the populous and government policy makers. Even when it goes against the common good.

Simple questions, how many of the products and services have you spent money on that are associated with billionaires? There is no way to answer that question when they use trust to hide their involvement. Saying a person has the ability to speak with their wallet is 100%. Corporate collect retirement funds also highlights this.