Yes, but you end up rewriting Datomic!
Well, except it sounds like Datomic is closed-source :)
Nah, our (not very good) implementation existed 10 years before Datomic :-)
But why?! The whole point of Datomic is that it implements this entire immutable framework for you, on top of mutable storage.
So YOU can focus on building your own specific business logic, instead of re-implementing the immutable DB wheel.
Because, for example, your application is not tied to the JVM? You are uncomfortable using closed source software for such a critical piece of infra? As far as I can tell they don't even have a searchable bug report database! I'd hate to be the one debugging an issue involving datomic.
Now I'm even more curious if you could skip Datomic and just do something like this directly with a relational DB in production