In the UK it costs the NHS huge sums of money to administer radiotherapy and chemo. For us there is no financial motive. It works. It's not the magic bullet but it's the best we have.
I would be dead by now if it was not for conventional cancer treatment.
The future probably lies in therapies based on the specific genetic causes of cancer. Cancer isn't one disease. There no "cure for cancer". There are many related diseases that all involve the uncontrolled replication of cells.
Rainbow Troll - You are welcome to your conspiracy theories and your quack cures but keep them to yourself.