Here's what I see: We have immigrants from poor communities as members of Congress who influence foreign policy. We have activists on all sides organizing people into constituencies that flip our government every four years. I have a friend who owns a business, works 7 days a week, and still manages to serve on the local board of education. The mayor or my city is a small business owner. Every week it seems there are mass protests organized for some cause, and local politicians respond to them, and the causes filter into congressional debate. Not everyone spends their free time navel-gazing at their broken mind and spirit, I guess.
You have a very strange view of how most people approach jobs. And politics.
But there is such a rich, colorful history of regular people building civic institutions and movements in this country - from unions, to legal movements, to civil rights movements - you have to really work to not see it.
Progress is often slow, frustrating and filled with many setbacks and losses. We certainly have tons of headroom to even the odds between all the Davids and all the Goliaths, but any victories achieved on that front is probably going to be because some regular people decided they had enough and fought for it.
About 5% of the labor force works more than one job btw - and this number doesn't seem to fluctuate all that much. Not totally insignificant, but people with multiple jobs are outliers.