The problem with concentration of wealth isn't the $2000 or so that we would all get if we redistributed the wealth of the richest to the rest of us.
The problem is that with an ever-smaller percentage of people controlling most of the $$ in the nation, the very structure of the economy and politics are in the hands of fewer and fewer people, resulting in an overall society that is skewed increasingly towards the aims and desires of a very small percentage of its members.
(Don't give me that Thatcherite crap about "there is no society." By her dippy logic, the atmosphere doesn't exist; there are only gas molecules and dust particles.)
Plutonomy sucks. And contrary to popular American opinion, the existence of megawealthy people doesn't show that "anyone can make it." Germany, for instance, is a far easier country to scrabble your way from poverty to the middle class than the USA. We are the best country to create a business in, but that doesn't translate to best economy to better your economic situation in.
But we love to worship the rich. Why does anyone think Bill Gates has solutions for education? His attempt at a "model school" was an utter failure that required much revision to be just "OK."
It's no wonder youngins in nations like ours have increasingly less faith in capitalism and democracy.
We need to end this new Glided Age like we did the last one. (A process that helped us become the superpower we are now, IMO)
If you are retired and think "well I made it!" realize you made it in a system where risk and cost hadn't been so heavily shifted to from the top to the bottom.
Or keep olding and bitch about the poor eating your lunch and how everyone to your left is a Bolshevik. Keep plutonomy working!
ETA: a vote for either mainstream candidate is equally a vote for plutonomy, IMO.