I said it elsewhere but I'll say it here - we need one of the top 10 richest people in the world - the Bezos, the Musks etc - to suddenly get very interested at a personal level about cancer treatment.
Then the money will flow.
Then the money will flow.
Cancer prevention is downstream from that, as cancer frequency grows exponentially with age. If you can truly rejuvenate a person, you will also reduce their risk of cancer.