Drug companies have no intrrest in researching cures.
Drug companies are for-profit. While there is obviously immense profit in providing treatment for maladies, there is a very limited profit available in cures.
Thus, drug companies do not have any intention of curing anything. It would be bad for business, you see.
And yet, I was just reading that there are multiple new (and phenomenally expensive) drugs that cure Hepatitis C. Insurers don't want to pay for the cure, because the course of drugs necessary for the cure can run in excess of $100K. And the latest drug is better than the previous cure, but even more expensive.
Presumably the companies bringing the cure to market are different than the ones selling the palliative care, so they have an incentive to sell the cure.