I doubt they look at it this way - I suspect the ones with the capacity to change it (ie: the ones in power) think the system is working out just great as it is.Arguably, shouldn't everyone be in favor of ranked choice - including the parties?
Republicans get butt-hurt by votes lost to Libertarians
Democrats get butt-hurt by votes lost to Green Party
Thus they would no longer "lose" those votes - presuming that they are next in line in ranking.
Also generally speaking I'm not aware of research that indicates either party would be particularly advantaged by adding current third party voters, so what it does is raise the specter of additional competition without giving them an electoral advantage. Doesn't sound like something the parties would want. (there could be research that indicates otherwise but I haven't seen it.)
