good point on how important it is to stake out a rainfly for it to work properly, so yes clearly stakes are an important part of any well working tent.
its those situations putting up the tent without the fly, either inside a structure, on wood or cement, or even on a bed, where self standing tents are handy.
my older hubba hubba was just before they put in those little ventilation openings at each end of the fly to avoid condensation (which really works great, have them on our 3 man tent) and I've attached new additional guidelines to the fly to help keep the fly away from the inner mesh , and to help with ventilation. It works, but now I need four more stakes to bring with me.....