Suffice it to say that trying to directly compare individual wealth across disparate populations is so disingenuous as to be tantamount to spreading falsehoods. People feel poor because they are poor; Americans simply cannot afford many of the things that other developed economies provide for their residents. We can make lots of small changes to help with this^ (i.e., we don't need a massive overhaul or revolution), but the people calling the shots have to actually admit that people are not doing well, and that the costs people face today are burdensome. They won't, because they're afraid of not being reelected (and then they lose anyway).
^Solve food deserts by opening bodega-like shops in both urban AND suburban neighborhoods.
^Replace surface parking with structures housing amenities that people can walk to.
^Increase mass public transit access by building rail and bus/bike lanes.