the problem lies with the mentality of the CF IMMs.
I'm paraphrasing here but I think it's an accurate assessment of how they think
about the game in that opening up the code would reveal too many "secrets"
and promote a culture of (some) players looking to find and exploit mechanical
advantages by examining the source.
They won't even accept professional software engineers working on the game
and putting their reputations at stake without going through the whole masonic
hero IMM process, nevermind them opensourcing anything of value. They've
repeatedly said that they'd rather have CF die instead.