The amount of those two vary widely in the rich population. More importantly, most people outside of it will never see any good opportunity on their lives. And even more important, a lot of preparation requires a good amount of opportunity.
> Luck happens when preparation meets opportunity
Plus location of birth. I'm pretty sure being born in a developed country, as opposed to somewhere like the DPRK, qualifies as blind luck.
That would be part of the opportunity part, right? That's literally where phrases like "land of opportunity" come from.