I study the HIV virus in my spare time. Sort of a side project...if I can come up with something for a thesis then I'll take it, lol.
One thing you should consider is that there is money in a cure, but not in a vaccine. If you can cure an illness without granting immunity to the illness your profit margins will still decrease, but they will still exist, because people are still getting sick. There is DEFINITELY money in a cure.
Also, HIV isn't a really complex virus. I mean, it's a virus so yeah it's complex, but it only has like, 8 or 9 genes, as compared to the herpes virus which has 32.
Most treatments target RT (reverse transcriptase) because it's (so far) the most effective treatment. But RT can handle some large variations so it's really a limited method of attack. That's why HAART came into existence.
Also, a few years ago a drug was created that targeted the protein 'spoke' that litters the HIV viron and is the primary means of host recognition and fusion of the two membranes. However, GP120 (the part of the spoke that recognizes the CD4 protein) has 5 'variable loops' that kind of 'hide' the active site of the protein, making drug delivery difficult. The drug is on the market but due to problems with delivery methods it's not a big player and is typically only used in patients resistant to HAART.
Presently, I think it's the viral protease that's the current focus of treatment research, but I could be wrong...it could be the integrase. (Side note - stuff that ends in 'ase' is an enzyme which is a protein. Integrase 'integrates' the viral genome into the host genome and proteases cut protein products to various degrees). I have a theory on how to attack the HIV virus, but I don't have my protein model built...and I'm just a lowly undergrad, so I definitely don't want to paint myself as doing something I haven't done yet. But I AM working towards a cure, and I'm not being paid for it. I'm pretty sure the researchers getting paid at universities and hospitals are working towards said cure as well.
And, the long and short of my essay here is that there IS money in a cure - just not in a vaccine.