A very promising cancer therapy should be explored and established even if it is not patentable and will not make much money for hospitals.
GEIPE (Gentle Electrotherapy to Inhibit a Pivotal Enzyme -- Ribonucleotide Reductase or RR) cancer treatment cannot be patented, but ii should still be explored and established because it is entirely scientific, non-toxic, highly effective and low-cost. Major cancer institutions like MD Anderson Cancer Center & National Cancer Institute have acknowledged the validity of this approach to treat cancer.
For details, please view this 6-minute video: http://youtu.be/hpO62HgXvsw.
(The scientific basis of this treatment provides a better insight into why electric fields are effective in halting cancer growth - the topic of the talk below. The two treatments are related.)