Important to remember that we as humans no longer compete for resources.
We have more than enough resources to go around for 10 billion people.
The limiting factor is in intelligence and dexterity. In other words, we get richer when we are more.
We very much do compete for resources. People die of famine, thirst, exposure, and other lack-of-resources-related causes every day. That we could theoretically feed everyone doesn't matter when people compete for more than their fair share.
Emm, what? You are aware of all the wars going on right now?