Of the billionaires I have known, money just brings out the basic traits in them. If they were jerks before they had money, they are simply jerks with a billion dollars.
We right now give $15 billion every year as subsidies to private insurers under the Medicare system. Doesn't work any better through the private insurers. They just skim off $15 billion.
The reason we have poverty is that we have no imagination. There are a great many people accumulating what they think is vast wealth, but it's only money... they don't know how to enjoy it, because they have no imagination.
Fill your bowl to the brim and it will spill. Keep sharpening your knife and it will blunt. Chase after money and security and your heart will never unclench. Care about people's approval and you will be their prisoner. Do your work, then step back. The only path to serenity.