Academia needs some control mechanisms. Otherwise, the scientific research is at risk of becoming completely chaotic. Selective availability of software is one of those mechanisms. In this case, a closed-source software is made available to a specific group of people controlled by highly competent leaders: the US academic community. This increases the prestige of the group, and indirectly the level of competition needed to get there. Moreover, it increases the prestige of the US universities. This also helps the world-renowned science leaders to have more refined control over the direction of scientific research and science policy.