Structure is great for a well understood problem space, but this is not usually the case when working working something novel. As a researcher your focus should be on learning and problem solving, not creating a beautiful code base. Imposing too many constraints early on can negatively impact your project later on. In the worse case, your code starts to limit the way you think about your research. I agree that there are some general best practices that should be applied to nearly all forms of coding, but beyond that it's a balance.

The same thinking should be used when adding regulation to an industry. Heavy regulation on a rapid developing industry can stifle innovation. Regulation (if needed), should be applied as our understanding of the industry increases.