I've heard lots of people speculating that the big pharma companies would be better of if there would always be HIV and they can sell their ART pills for live. But on the other hand if one of them is the first one to create a HIV immunization, this alone will make them so extremely rich. An effective HIV immunization will become standard immunization for all people in the western world and the WHO and UN will take all in their power to immunize as many people worldwide as possible. Just imagine the amount of doses that will have to be produced. And you would be the only one company having this product. This has way more financial gain that being one of the dozens of companies that produce ART therapies. On top of that a few people working in high positions of big pharma companies are still "nice" people who would actually be proud of curing a disease. Not everyone just counts their dollars every day and hopes that more people get sick.