This is the "rock star" fantasy. You do something that becomes wildly popular and can then walk away while still making epic amounts of cash. You didn't earn that $1B through continuous effort. It was all made by your initial idea. It just takes time for the cash to be delivered in full.
Do you deserve to profit off a good idea? Yes, and few would contest that. Do you deserve to profit so much that you never have to work another day in your life? Should the system let people retire after having one good idea? That's going to seem like a sub-optimal system to many. However, its important to note that ideas take capital to implement, and it's much more typical for rock star rewards to go to those with the capital than those with the ideas. That's a system that many more will find to be flawed.