Each time i've heard medication companies talking on tv or any other media, they were saying that the challenge with HIV is more about finding a cheap to produce medication. In this case it's perfectly logic that they're doing some efforts in this direction : if they sell it expensive, they can only sell it to rich countries but if they can produce something that is so cheap that third world can afford it and still doing some benefits on each units sell, they have a very very big market.
Of course it wouldn't be so perfect... i guess it wouldn't be cheap enough for every countries but i'm sure some effort is made in this direction.
I've read somewhere that vaccine isn't develop because it would be very bad in terms of rentability. To make money with HIV, a medication company has two possibilities : long expensive therapy that never stops like what currently exists (this is the die now or pay to die later you're talking about), or selling cheap to produce medication to everybody. But yea the cheap medication is risky and that's why there's maybe not as much effort as there should be.
