However, with 13% increases annually, I don't think it's unreasonable to see society test ways in which it can tame the trajectory of costs.
PGS, sorry to have to alert you that "society" is a meaningless abstraction, useful for lazy intellectuals--usually liberal ones, I hate to say--who refuse or are unable to theorize the societal forces, economic, political, ideological, that comprise that abstract unity that they call "society."
In the present political and ideological configuration, there is no way in the world that the trajectory of costs will be be tamed by plans which in any way infringe on the profit margins or economic prerogatives of the hospital/industrial/insurance/pharmaceutical complex.
America is not England. Dew and you are unwisely extrapolating from a country that is far, far different in its cultural/political/ideological configurations than the United States.