Now, I just think you are arguing in bad faith. What I meant to say was clear, but I said "technique" instead. Then, instead of debating what I meant to say (you know, the actual point of the conversation), you took my words verbatim.
I'm not sure where you are going with this ... but for what it's worth, techniques can be copyrighted ... even patented, or protected via trade secrets. I never said what the techniques were, and I'm not sure what you are going on about.
I'll repeat this as well: "Fair use" DOES NOT EXIST unless you are getting sued. It's a legal defense when you are accused of stealing someone else's work, and there is proof you stole it. Even then, it isn't something you DO; it's something a court says YOU DID. Any time you use something with "fair use" in mind, it is the equivalent of saying, "I'm going to steal this, and hopefully, a court agrees that this is fair use."
If you steal any copyrighted material, even when it is very clearly NOT fair use (such as in most AI's case), you would be a blubbering idiot NOT to claim fair use in the hopes that someone will agree. There is a crap load of case law showing "research for commercial purposes is not fair use," ... and guess who is selling access to the AI? If it's actual research, it is "free" for humanity to use (or at least as inexpensive as possible) and not for profit. Sure, some of the companies might be non-profits doing research and 'giving it away,' and those are probably using things fairly ... then there are other companies very clearly doing it for a profit (like a big software company going through code they host).