Earlier quoted context omitted.
Do you believe in meritocracy? Because ownership of that amount of wealth is surely going to skew the entire system. How long before we just have a permanent ruling class, and how does that move humanity forward?
There is always more wealth to create.
It means the rich capture a growing portion of productivity, and in modern days it is on the strength of the financialization of productivity, not necessarily people actually doing work.
How is this an optimal system? How is it even a functioning system? What we are doing as a species, today, right now, is not working and our ability to live on this planet is increasingly in danger.