That is not in evidence. You may be thinking of inflationary pressures causing the poverty income level to be adjusted upward. This is not a result of income inequality. It is a result of supply and demand.
> "Power corrupts, absolute power corrupts absolutely."
That is an aphorism, not a universal truth, and holds zero moral weight. You may be judged as corrupt by what you do, not by what you have.
> ...inordinate power and wealth ensures that abuses will occur.
No. This is envy as evidence. It doesn't work that way. Your use of the word "inordinate" is also meaningless from an economic or policy stance. Who decides what is inordinate? What qualifies a level as inordinate?
There is only one equilibrium state with full equality: vacuum. In an economic sense this is where zero exchange of value occurs. It is system-death.
In a just world, you keep what you earn. You reap what you sow. When someone powerful steps out of line you punish them. If they do not, there is no reason to punish them. Pre-punishment because "they probably will" is propaganda from the dictator. We don't want that.