I think it’s less about Stockholm Syndrome, and more about blackmail, bribery, and greed.
Would they fall for the blackmail, bribery and greed if it weren't for the constant Swamp message that those practices are the norm in the Swamp and, by extension, the country?
I think that it is time to stop doing business in DC. With modern technology, Congress can telework and teleconference to get their jobs done--and they wouldn't be subjected to the constant pressure to submit to the Socialist/globalist agenda. But they would be among their constituents, who presumably would be reminding them daily of why they were elected.