A small white minority cannot rule over a vast majority indigenous population forever, see South Africa.
I did not say that Mexico had a social, political and economic system that encourages or even permits people to climb a ladder by education and hard work. Instead, Mexico does have a very large economy where 2% control 97% of the capital and those 2% are not going to collapse their system.
I distinctly remember an article out of Venezuela, 25+ years ago, that was titled "Blondes vs. Brunettes" which fairly matches your statement.