Given both recent-ish issues at Roscosmos, and the relatively-famous Columbia rescue plan - https://arstechnica.com/science/2016/02/the-audacious-rescue... - I wonder if SpaceX has a quiet "we will always be capable of launching an extra Crew Dragon within X days" operating rule. That'd cost money...but have enormous appeal to both the spacefans in the trenches and the Chief Ego Officer.
I'm not an expert in this field but I feel like the key is to make Dragon as a platform cheap, and once that happens more rides can be carried (to ISS) hence making the system battle-tested. Being cheap and reliable are the two major reasons NASA rode with Soyouz in the past few decades and, for better or for worse, still riding with them even after the Ukraine war started.
