It's well understood that big pharma has no incentive to cure diseases: they make more money by developing unique, patentable chemicals rather than using existing (unpatentable) natural compounds & remedies. Also, they seldom seek a *cure* - they make far more money from a lifelong treatment, ideally one with side-effects requiring further treatment.
The software industry is precisely the same - they want to sell you a treatment you pay for every month, not "buy once, problem solved".