Generally, studios don't do it because it costs too much to hire those skills. Having advanced libraries available would open up what people can do without need

Generally, studios don't do it because it costs too much to hire those skills. Having advanced libraries available would open up what people can do without needing to hire PhDs, since it is much more demanding to hire someone who can build this stuff from scratch than someone with enough working knowledge to apply it. I agree that 3D first person shooters aren't a good fit for complex simulations. Complex simulation games, however, are. The AI for those tends to be really bad, and this makes them nothing more than rote optimization tasks, and not that fun. There is a lot of room for these tools in the strategy market for these tools, and "the norm" is predicated on those things not being available. Recent advances in machine learning such as style transfer have huge applicability to procedural content generation in games, but you better have access to python. With 99% of the games on steam being some lame platformer or survival clone, I do think these tools are needed so that progress can be made, so that better games could become the norm.