Background: AI Master Student, some practice in RL

I don't think there is a fundamental reason that we can't but it's rather that no one did it. I don't know a definitive answer as to why but here are some options:

• too obscure ('no-one has thought of it', or 'no-one thought it was a good idea, it's only assembly-like code after all')
• high barrier of entry (you need to write an RL environment that you can query fast, and you need a lot of compute)
  • this makes it harder for individuals or small teams to do this, and larger players like DeepMind and OpenAI might have different priorities
• now that we have Codex (and soon^TM its newer, allegedly much better version), there might not be any (economic or scientific) reason to do this
• What's the value you'd get out of a code wars expert model? I glanced at the Wikipedia page. How would you convert its outputs to a useful program, that does more than gobble up all your memory?