I looked up the big word for greed.
Defining the problem (in a broad sense) is easy.
My solution is a single payer like Medicare, but I'm not sure how you would unwind the private sector insurance so you would have the money to pay for it. I use Medicare as a baseline for care because I have it and am pretty happy with it and Medicare numbers are readily available as a worst case example (all old people) for cost comparisons.
But what I would really like to explore are other ideas (with examples) of how to get the costs in line.