Inflation occurs when the US government adds around $10 billion of money to the market every year though (they print money to replace existing / lost currency, but always over produce). The money gets "consumed" but the value of each dollar goes down. And that's just with $10 billion.

That point aside, my original point was that just because the 6 richest people have paper value of more than half the planet doesn't mean there are enough resources to keep everyone alive just because they are born. (which is ideal in a theoretical world obviously)