That's one thing about being 'investigated' that is rarely brought up. Unless you are going to be ground to mulch by people who are trying to trip you up and come up with something like "contradicted testimony", "lied to or obstructed" investigators, or otherwise be caught up in the witch hunt, you have to have lawyers, very good lawyers, and the government has plenty of time and resources to run you into the ground financially, no matter how much you had when the investigation started.
I can see where this could be used to impoverish anyone who comes close to the administration, making accepting any post radioactive.
This isn't a question for me of liking Manafort or not, just an observation of the tactic which can be used to chase away competent people who don't have billions of dollars to wait out the government.