I'm not up on the big pharma killing off possible cures. I can't say either way and I haven't researched it. I can believe that some companies would be as dirty as needed to keep their $ maker.
Considering the $ that folks are listing for treatments, would insurance companies not be just as motivated to make sure any possible cures are pushed to the front?
It seems like the fight "for" a cure would have just as much, if not more, support than a fight "against" a cure....from a $ standpoint and especially a humanity standpoint.
Look at a list of how much the various industries spend on congressional lobbying every year. Big pharm tops the list and by a large margin. They spend a lot of money making sure congress doesn't let their profits drop.
