If only it was as simple as that. In medicine a wrong diagnosis can have very bad real world consequences so 90% cheaper and 99% faster has a very real possibility of being a net negative.

Flipping a coin is like 99.999% cheaper and 99.998% faster than the AI, though. I mean, as long as you don't care about accuracy...

Errrr, except for the people who are dead or have unnecessary surgery? All of that failure is much much more expensive!

90% cheaper seems unlikely given how exponentially increasing the costs of CPU power to train models are.

way cheaper than 90%, and way faster than 99%. Radiologists are crazy expensive, at least 50$ per scan. Let's say you use a 1000$ GPU (which you don't need to as these models are usually tiny in practice because of the limited size of medical datasets and because you're not doing hundreds of scans per second.. a CPU is very likely fine). Then.. just 20 scans in you make your money. Let's say the license cost is 5$ per scan. Still make your money very fast.