Interesting and encouraging!
I wonder whether/how this theory will develop in other industries. E.g. Selling tuberculosis or HIV/AIDS drugs at a low price to people living in poverty in developing countries. There has been a huge argument about whether it's do-able.
Alanna & all -
The PEPFAR II has eliminated the hard earmark on abstinence, which you mentioned in your article as " 33% of all HIV prevention funds - 20% of the PEPFAR budget ". (i.e. H.R. 5501, Lantos/Hyde U.S. Leadership Against AIDS, TB, and Malaria Act of 2008 signed by President Bush in July 2008)
For more details, see the table compiled by Global Health Council http://www.globalhealth.org/images/pdf/public_policy/080108_aids_tb_malaria_03vs08.pdf