This theory explains why there are not a lot of conservative academics or scientists. Those careers are often low earning and more for the public good, so are more cooperative overall (even if they might be quite cutthroat in their own way).
It also begs the question that perhaps studying something deeply enough to get a PhD leaves a person with a perspective that is less compatible with certain viewpoints. Also, lower taxes for a college professor probably would be a net negative, as their college would be getting less government funding.