Yusuf Hamied — Indian Scientist

Yusuf Khwaja Hamied is an Indian scientist and chairman of Cipla, a generic pharmaceuticals company founded by his father Khwaja Abdul Hamied in 1935. He was awarded the Padma Bhushan, India's third highest civilian honour by Government of India in 2005... (wikipedia)

AIDS today is not a death sentence. It can be treated as a chronic illness, or a chronic disease.
As long as I can contribute, I'll continue working.
If tomorrow the Chinese decide not to supply the world with raw materials, the pharma industry would collapse.
Unfortunately, the mechanism for doing philanthropy in a structured way isn't yet in place in India. I already do a fair bit and support various causes such as education, sanitation, health. But selling costly drugs at affordable prices is philanthropy in itself.
I believe that life-saving, essential drugs should be freely available and the innovator should be paid a suitable royalty payment for his invention.