Many ,many people aspire to achieve what we are calling "middle class" status (?) and work dilligently to do so...
Once they are there, like so many of those who were born (or, somehow drifted?) into it, many just can't wait to move up, higher & higher. Sky's the limit!
If you really want everyone to be totally "equal" you condem society to a bunch of averages:
average income
average dwelling
average family
average education
average wealth
average expectations & aspirations
Figure around the 60th percentile, give or take.
More like... Cockroaches or plankton?
Ants, termites and bees even have different classes.
p.s. NIKE is WAY not politically correct enough to satisfy the rabid anti-everything masses around here! Notice I refer to them as masses vs. majority. When we moved here a quarter-century ago, NIKE was jus' blue sneakers with a Swoosh!