Poor people don't move because they lack funds to do so. It's one of the big problems in the US that hits the fixed income people who live in high expense areas. Access to healthcare for the poor is a lot better than in it was in 2005 because of Obamacare that expanded medicaid yet disability rate is at an all-time high. Indicators for health care access like high cholesterol levels and untreated cavities is at a 20 year low.