The idea that AI curing cancer, heart disease, aging (you get the idea) won't be a money maker because "clinical trials" is absurd. Of course it will be. Obviously it isn't the same thing as coding agents. But a lot of money makers aren't the same things as coding agents.
In order to cure cancer with AI, you would need to give it complete control over the experimental pipeline, including probably direct robotic access to a web lab, which comes with its own set of risks. It's just not the same problem space as coding at all.