A friend of mine is a virologist. I joking asked him if he's cured any diseases lately. He tells me that drug companies aren't in the business of curing diseases. They're in the business of treating them.
Been saying this and seeing this for years. A cure is essentially a one time cash payment. A prescription for treatment represents a continuous cash flow. And after your liver is destroyed by this prescription, they will have a prescription for that, too.
Your "virologist" has feathers and webbed feet. There are three companies that have invested several billions to develop treatments for Hepatitis C - for most patients a three month course of oral meds will mean elimination of the virus and a clinical cure.
Give that quacker a cracker, he knows not of which he speaks.