You're exactly right. In DC there are no mfg plants or business like any other city or town in the USA. Everyone there works in the bureaucracy in some capacity.
I would feel better if Judge Lamberth was making the decision instead of a jury from DC. Any other location I would feel the opposite.
In the Michael Sussmann case brought by Durham a couple months ago. Robert Gouveia Esq posted this video of his reporting on the transcript of the jury selection. It was bad. All worked in DC at various government agency's. A few of them were Clinton donors and they got on the jury.