Of course people are getting richer in absolute terms, that's not surprising (if you assume technology advances and produces any increase in value at all), but

Of course people are getting richer in absolute terms, that's not surprising (if you assume technology advances and produces any increase in value at all), but with that comes inflation. Now, the interesting question is not whether people are getting richer or not, not even whether people are getting richer faster than inflation negates those gains. The question is: are the richest X% (for a sufficiently small X) is getting richer much faster than the remaining (100-X)%, and whether that difference in the rate of growth is sufficient to seriously unbalance a country's society? Even if it isn't, does that concentration of capital make the whole economic system less efficient than it otherwise could be or happens at the expense of basic living conditions for people in the (100-X)% group?