from my point of view. your current car is better than your last. and the next one will be again better. and then at some point you might not even need a "car"

from my point of view. your current car is better than your last. and the next one will be again better. and then at some point you might not even need a "car" (as we understand it now) anymore. but that is closer linked to technological progress than to increasing wealth. if i understand above's argument right than the wealth gap has less to do w/ how much people have but (on the longer run) how much chance they have to change it (relatively).