Look for professor Steve Keen in various media. He has explanations for these phenomena, and some potential solutions.

In the linked article, the term "economic growth" is used without definition. One of the main causes of inequality is credit growth - not growth in economic output, which wouldn't be problematic but there is almost no such growth in the west.

Keen sees a potential solution in what he calls a modern debt jubilee.

I also recommend catching Lacy Hunt when possible. These two economists have different perspectives, but both have fresh perspectives.