Not necessarily - I just like to muse about big-picture problems with society from time to time. Contrasting median and mean income (a flawed measure for various reasons) was just the first idea I had when I was trying to sanity-check the common-sense idea that because it's easier to get money if you already have money, social polarization is likely to grow.
As far as the US is concerned, campaign finance reform often gets mentioned as the most immediate step to improve upon the current situation.
As to the big-picture problems, frankly, I'm not sure humanity as a species is enlightened enough to overcome self-interest and inertia to ever fix the systemic problems present in the current way we organize society. Hope for benevolent robot overlords, I guess ;)
Hypothetically: what're some solutions that a monied person could implement to stymie the runaway feedback loop? I know it may sound odd but is it possible to use money to stop the purchase of political power for both yourself and everyone else?