Being in Washington puts them in close proximity to their cash machine.
Any time it looks like Boeing might lose a federal contract... it will be easy for top execs (up to and including the CEO) to go "press the flesh" in the White House, the halls of Congress, or the corridors of the Pentagon.
This is a tacit admission that -- between the 737 MAX fiasco, the bumpy 787 rollout, major customer defections, the inability to launch a new "middle of market" airliner, and the totally botched merger with Embraer -- they're rapidly losing ground to Airbus in the commercial aircraft space.
The space division is also getting its clock cleaned by SpaceX -- the Falcon is a much less expensive launch vehicle compared to the aging Delta, and the Dragon is running circles (orbits) around the Starliner which has still yet to have a successful test flight.