Why should I care about the relative wealth of the rich instead of absolute wealth of the poor?
Nowadays a blue collar worker (at least here in EU) has better living conditions than the wealthiest and more powerful mere hundred years ago.
Nowadays nobody has to die because of bad teeth and everybody has access to cheap and effective education and through that to other means of production.
* dental insurance * effective inexpensive dental care * effective education * access to effective education * a pathway to 'other means of production' * better living conditions than the wealthiest of a mere 100 years ago (the second industrial revolution and the gilded age, where the rich were incredibly rich, and the poor were utterly wretched)