Buddy I totally agree with you, being born in any family be it poor or rich isn't anyone's fault as you said but what matters is where you actually wants to be at the end of it all, being born in a rich family doesn't guarantee a person remaining rich or following the family footsteps but it all depend on individual but whatever happens such individual has to take the blame because he or she fails to realize that wealth is been built, you take up of challenges to remain rich, sometimes if opportunities ain't coming, you create them yourself by thinking outside the box, you try to invent ideas that may be needed by the large population of your society and sell it to them for money this will help you to go global too, most rich people  today was never born in a rich family just that they were smart enough to realize and recongnize when opportunity is knocking.

Mate your statement is full of wisdom, it don't matter if one is been born to a poor family but what counts is how such individual ends, as I have said earlier it all depends on the person, though people will argue that what if such person try and continue failing, my answer is he should keep trying different things until one becomes succesful, not trying is higher risk but trying is a lesser risk because the more you try you will figureout where you have made mistakes, you can improve on them to reposition yourself as such you may get it right while trying.
So it is better for us to decide wisely on how to keep our financial life intact because failure can never be celebrated and for me there's no excuse for failure hence we are ready to take a calculated risk in pursuit of riches.