What's the difference between the "Bogan millionaires" now and the "nouveau riche" of the train barons, telecom barons, wall street millionaires, movie milliona

What's the difference between the "Bogan millionaires" now and the "nouveau riche" of the train barons, telecom barons, wall street millionaires, movie millionaires, textile tycoons, etc. when they were trying to prove themselves to the old monied peoples who brought their spoils from the "old country" or previous generations? It just sounds like a new term for the same unnecessary guilt complex.