There's a contradiction built into our instinct to hoard: the more we do it, the less we get.
An idea shared is worth more than one kept hidden. Opportunities passed from one to another create connections which lead to more opportunities. Opened doors lead to forward motion.
Winning doesn't usually involve demolishing the opposition. Instead, for most of us, it's about weaving. A scientist without peers won't find a breakthrough anytime soon. A bookstore with one book won't work. A market with only one vendor will fail. And if you're the only cello player in town, your craft will disappear. Trust and connection and utilization support forward motion.
The primary driver of our well-being is our culture. A culture built on selfishness is harsh, brittle and short-lived.
We're not paying things forward. We're launching them forward, and it will boomerang back to us, eventually, somehow, in some form, if we do it often enough and with enough generosity.