Interesting way of looking at it - part of the problem is that in a digital world wealth is just a simple number. I am moderately well off by most people's standards but whether you have £1k or £10k or £100k in the bank it doesn't really sink in in terms of day-to-day life.
Imagine a situation where to represent a billion, you had to write million a thousand times (a bit like roman numerals sort of approach). Then the difference, the unattainability of being a billionaire would really sink in, rather than just being the next rung on the ladder for millionaires.
All about representing quantities of money with grains of rice. Some videos depicting large sums are surprisingly thought provoking.