In my opinion, the most important components are ones nation and system of birth. If you live in a free, fair and capitalist system, you can accomplish anything and pursue whatever you define success to be.
In other systems, your effort, talent and aptitude do not matter, or they certainly matter much less. You are in many ways a victim of circumstance.
In Canada, we have an inordinate number of citizens who leave for other nations, especially to the U.S. Our best talent and most ambitious leave. For what reason?
The Canadian system is unaccountable and designed to reward nepotism and the less impressive among us. As such, the U.S and other nations, pursue the top talent that we shed. Embracing this same talent to surpass our own companies that didn’t or wouldn’t provide opportunity to the same citizens.