Do you know of non-DARPA organizations doing the kind of high-risk, high-reward work DARPA does but without the military angle?
But it's the case that all of these places also sponsor work and work with the military. I guess the answer is yes that it exists, but no it doesn't exist (AFAIK) completely military free.
I don't have very good visibility into pharma companies and agro companies. I know that they do some long term research and I don't know (I would suspect) whether they have partnerships with DoD folks.