What are you talking about. Most of the residence of Northern Virgina are either fed servants, gov contractors, or lobbyist. Removing them would only help!
Fairfax has about 180,000 lawyers though ~ but there's a large federal court establishment in the DC area including a number of specialty courts.
The largest single identifiable industry group around here is a nebulous structure of NON PROFIT ORGANIZATIONS, and most of their employees are involved in printing and mailing.
There are, of course, lobbyists ~ but they are not as massive a body as you might imagine.
Many people imagine that DC is a concentration of federal employment, but it's really not ~ sure we have the headquarters elements of the major bureaucracies around here but CONGRESS makes sure the overwhelming majority of federal jobs get distributed to districts all over the country.