It seems that nobody can do anything about gentrification, which is a great shame. Housing and land are too expensive for the poor and the rich don't want them there anyway.
But-here's the funny thing. Megan McArdle is accustomed to thinking of herself as la crème de la crème but the wealthy have become so very wealthy that she is now middle class in comparison. One day she, too, will be pushed out of her neighborhood by her bête noir, the trust fund class. They will buy up her row of little Victorian brownstones and tear them all down and build a mansion with park-like gardens for themselves and their little darlings Pierpont, Hunt and Caroline Eugenie.
No doubt McArdle will be very very happy to be pushed out to the suburbs like every other schlub since the land and mansions will be far, far too expensive for poorer people like her. And what can one do when the Free Market Fairy decides that market forces are immovable? Absolutely nothing.