So, what other types of physics is not well understood and requires funding to further research. We know F=ma, things in motion stay in motion, blah, and so on. We know a current flowing down a path will generate a magnetic field. We electrons moving to a lower energy path will release energy. We know light bends in a lens, and how to make that useful. Essentially, the funding for pure research and discovery is going to be more exciting than how to take a current understanding of physics into a way of making money. Plus, that kind of research should be undertaken by private investment.