Languages like Malloy or PRQL require some upfront investment to learn and setup. Additionally, I think both Malloy and PRQL are query oriented, so you still need to learn a decent amount of SQL to interact with your database (for updates).
I'm guessing most people would rather spend effort in solving their immediate problems with SQL rather than bet on a newer and less known technology, even if has a lot of promise.
I'm guessing most people would rather spend effort in solving their immediate problems with SQL rather than bet on a newer and less known technology, even if has a lot of promise.