Yes, we have equality problem. The question is how to address it.

Some want the government to take more from the rich and spend it on things that benefit most of us.

Others seek the ways for giving more people greater access to the new wealth created.

Lastly, is there a sweet spot, the best inequality level that stimulates the most economic growth?

The interesting take on this issue starts in the 37th minute of this video: https://www.youtube.com/watch?v=GU64BjKT5wE. Mr. Song Hongbing is one of the most influential, if not the most influential political writer in China, focusing on international finances. His books are read by elites. There are no English translation. I read two of his books in Polish translation.