Wealth is something that is created.
That simple concept is missing from the economic makeup of far too many people.
If this millionaire had never been born, would those 1 billion people have one more dollar to their names?
You might also take note that the "Untouchable" problem isn't a matter of economics.
In 1995, 50 percent of Indians lived under the poverty line. That number is down to around 20-22 percent now. And as much as it makes socialists, anti-capitalists, and other "eat the rich" types grind their teeth, it wasn't Mother Teresa who pulled that off.