The Billionaire Paradox: If Your Trading Strategy Works, Why Sell It?

I was scrolling through one of the algorithmic trading groups on Reddit this morning when I stopped on a post that I think every retail trader has thought about at least once.

The title read: “No person/company will EVER sell you a strategy with a real edge!”

(Context: A skeptical trader arguing that if a strategy made money, the owner would keep it secret.)