First objection. Why would the people in power change the voting system that got them in power? Well, the spoiler effect has cost both Dems & Reps a major election before. Getting rid of that glitch would be a win-win for major and minor parties!

This inference is completely defective. Of course a system has a cost, but the cost to a major party of changing to rcv is in many cases to completely hold decades-long strangleholds they previously had. It’s like saying, uh, “Right now Hugh cooks his food, but that sometimes results in him burning himself, so of course he’d be glad to sign on to eating food raw!”