This document presents a model showing how inequality can lead to a vicious cycle of concentrated power and influence that exacerbates inequality. The key points are:
1) Normally economic growth reduces poverty, but inequality diverts resources, causing wage stagnation and less opportunity.
2) This inequality concentration leads to power concentration that blocks policies helping the disadvantaged and promotes policies worsening inequality.
3) Evidence shows rising inequality impacted middle incomes, opportunity, mobility, and political influence correlates more with wealthy preferences.
4) To break the cycle the document suggests campaign finance reform, efficient government, addressing future challenges, and better policy research dissemination.