There is some promising cancer research out there. My dad had aggressive GI tract cancer and was put on a research program with an experimental drug. He died 6 years later unrelated to the cancer but the autopsy showed that the cancer was dead and calcified in his body, he could have lived to be 100 with it that way. They could have safely removed what was left.
Now, would that drug cause some heart valve issue or something later in life? No idea, which is why it takes these drugs so long to become approved. There are cancer drugs that will keep the cancer from killing you but will in itself kill you later from other damage. Bleach kills Hepatitis but I dare you to inject yourself with it.
I don't believe the "better money in treating cancer" stuff, there are companies dedicated to finding cures out there that aren't associated with the treatment pharm companies. The only difference between cancer cells and normal cells that surround them is the rate in which they split, which is why radiation works on them but making a medicine that targets those cells and not the healthy cells is where science hits a brick wall. You're trying to kill cells in a host body made up completely out of... cells.