But there's a lot of cancer where it isn't cheaper to treat it earlier.

https://www.cancerresearchuk.org/health-professional/screeni...

> Overdiagnosis is the diagnosis of a cancer that wouldn’t have gone on to cause harm in a person’s lifetime, in other words, if the person hadn’t been tested (whether that’s screening or some other type of test), the person might never have known they had cancer, and would not have died from the disease.