Earlier quoted context omitted.
> Many famous people started out with one good idea Which had nothing or almost nothing to do with their success. Bezos didn't succeed because he had the idea to "make an online bookstore".
Based on the limited background information I've read about Bezos, this seems true, but can you explain what you mean in more detail? Just because it's interesting.
That 500 other people with the same idea would have just as well failed (and in fact, tons of people with the same idea did and do fail in most business attemps).
Prerequisites matter (having the money, VC connections), time matter (dot com golden era), place matters (USA vs say Kazakhstan), the overall economic trajectory matters, execution matters - heck, even luck at various different points on setting up the business matters more than the idea.