>Once you're paid more, you move into a bigger house, have more needs, and without knowing it you're just as tight on money as you were before

This absolutely isn't a given. Lifestyle inflation to the extreme is in one's own hands first and foremost. Which is the most audacious part in this whole topic: yes your CoL is likely to be high if you earn such a giant income, but you are given options the majority of the west, let alone the world, will never have. As long as the percentage of one's income spent is roughly similar across all.