Satoshi Nakamoto created BTC to cut out financial intermediaries, something that everyone can stand to gain from. He and other early miners were taking an incredible risk
Sorry I miss some logic here, exactly which risk did somebody you call Satoshi Nakamoto took? The risk that his couple of month of coding would go unnoticed? But there are millions hobby projects like that around, guy did it because he liked the idea and thought it had potential.
As to your claim that for some reason BTC can grow independently, I don't see a single reasonable thought here on how the cycle can be broken, for a business that accepts BTC but spends USD.