The economy is not a zero-sum game. Inequality doesn't materially harm anyone as long as it's caused by the rich (or middle class in this case) getting richer and not by the poor getting poorer.

Obviously if the poor got richer too that would be even better (that's a whole other discussion), but that they didn't doesn't make this bad news unless you're the kind of jealous person who hates hearing about other people's success.