A number of biotechnology companies are not willing to make huge investments with their own money in AIDS vaccine research due to scientific and financial risks. Here are figures to prove this. In the year 2005, biotechnology companies spent about ten percent of the $759 million on AIDS vaccine development and just three of the thirty companies spent around $5 million of their capital in AIDS vaccine research. Companies fear that they may not be able to recover their investments as HIV is mostly prevalent in developing countries and it would be difficult for them to cough up money for the treatment. Though there has been increase in philanthropic funding for finding out cure for AIDS but the involvement of industry is necessary as these companies bring their specialized skills and resources along.