When Simpson Thacher & Bartlett attorney Kenneth E. Young was looking in 2006 to move his family from New York to Philadelphia, he was searching for a law firm environment in the city that would most closely resemble the type of high-end corporate work he was handling at his Wall Street firm.

Six months into working from Dechert's Philadelphia offices near 30th Street Station, Young soon came to realize he was working on the opposite side of the table from his old firm on the same large-scale transactions and financings.