One of the factors in fair use analysis is whether or not there exists a market for licensing for the use in question, and this is conventionally given the stro

One of the factors in fair use analysis is whether or not there exists a market for licensing for the use in question, and this is conventionally given the strongest weight in fair use analysis. So yes, making agreements to license content does illustrate that there exists a market for using text in AI training, and it will do a lot of damage to arguments that it's all fair use.