America is the land of opportunity; rich people in America took advantage of the opportunity. Therefore taking advantage of this opportunity can make you rich. Says nothing about the arguments for the causes of poverty. Also valid modus ponens but unsound. Also potentially suffering from Hume's "problem with induction".
As it is now, many low key opportunities have been taken and/or removed, it is now much harder than ever to break through for an enterprising person - need much more up front investment.
In the past, you could indeed go from a paperboy to a writer. Try doing it today.