if you search online they did address this repeated request
in summary they do it for money, they dont know how to do it for money if its open-source, they already contributed clojure to the open source community
someone already was vocally aggressive about this in a blog: http://z.caudate.me/on-whose-authority/
and rich hickey didnt like it: https://www.reddit.com/r/Clojure/comments/73yznc/on_whose_au...
--
My personal take on this its not that datomic is closed source or that it cost a lot of money
its that for its cost, its a valid option for fewer people
i use ms sql at work, and it cost a lot of money but .. you can easily make the business case for it
for datomic ... it would be much harder
datomic is a niche product .. which is not bad .. it is just where its at