Its basically the argument of that
Atlantic Monthly article that has be discussed in multiple threads.
The Next Slum?
I live in one of the inner suburbs of Chicago which original developed during the time of street cars. As a result we have excellent transit links to downtown Chicago (the Loop). Housing prices appear stagnant to stable in our town, which seems to be pretty good compared to some of the outer burbs in our metro area.
Incidentally, there appears to be a mini-trend of companies relocating from the urban fringe into downtown Chicago. Its by no means a dramatic shift, a few hundred employees here and there, but it may be a sign of things to come.