DC Housing Prices

I was watching the news the other day and it's official: the Washington Metro region is the highest performing real estate market in the country. Considering we just toured the U-Street area, it had me wondering: who's really buying these houses? Do we care if current residents are being priced out and forced to move? I think about the fact that the unemployment rate for blacks is 16% in the area compared to whites at 8%, how will U-Street or any other neighborhood going through renewal look like in the next 5 to 10 years?