The real goal of AI is not to create cheaper health care for '"he sake of the patient"
Just as you and the Money Moniker have differing views on what it is to practice medicine, I assure you that while some people do want to save administration money (IBM Watson), the vast majority of us ML researchers are doing it purely to help improve the lives of others. The ML PhD salaries are sweet, but I'd pull the same hours doing the exact same thing for 60k/year as I feel this is the most effective way I can help the most people.
That being said, I'm all for saving money by reducing patient demand if the case can be handled more efficiently by a model and doesn't require a physician. However, this would be in systems like the UK or Canada where the growing population is placing a burden on the national healthcare system.