What's happened is because the potential market has risen, firms have specialized.

The firm specializes in high end corporate and commercial legal practices.

The firm specializes in land use, zoning and real estate law.

The firm specializes in litigation, corporate, property and government law.

The firm specializes in "real estate, corporate, environmental and commercial law."

The firm specializes in providing investment banking services to technology and health care companies.

The firm specializes in business intelligence, risk assessment and litigation support.

The firm specializes in financial services, housing finance, and immigration policy.

The firm specializes in bankruptcy, personal injury and social security disability law.

The firm specialised in civil, structural and building services engineering.