What is one counter-argument to the premise that the wealth gap is a serious problem which needs to be addressed?

One such argument would be that Investments by the upper class create lower-class jobs.
Although wealth gap is indeed a serious problem and needs to be dealt with, there are certain counter arguments which prove the opposite. This is one of them, given that upper classes invest a lot of money in the country so lower classes can work as well.

Because he is a selfish dude

new ideas form the base for the growth of the people.each time they try to develop, they may discover a new form or abilities of themselves this makes the people satisfied in living their life in a happy way.this makes sense that new ideas of people cn change their live.the ideas, if bring their best, they will be changing their present state.