Curious why you're asking this question when it seems to have little to do with Datomic going "free"? Did you mean Datomic WASM on the horizon? Or am I missing some other connection between SQLite and Datomic?
Datomic Wasm backed by SQLite.
Interesting!
What are you using SQLite for? If it's analytics, perhaps DuckDB WASM might be an option?