I honestly feel like Washington has been trying very, very hard to be the Cleveland Browns for 10+ years, but their other skill positions just won't let them.
Cleveland is really the only other franchise that has so poorly mismanaged QB. Though Buffalo is probably in the running.
What I don't think Washington understands is you can't trade for a top tier quarterback. You have to develop them. Once in a blue moon something like Kurt Warner, Carson Palmer or Warren Moon comes up, but it's incredibly rare.
Sure, Philip Rivers and Drew Brees were traded around, but they weren't very good when it happened. Both of them were playing worse than Cousins. Virtually nobody trades a top 5 QB unless he's in the twilight of his career and coming off of an injury(see Warren Moon, Peyton Manning, Brett Favre).