State-of-the-art technology and hyper-efficient processes are meaningless if employees don't use them. Unfortunately, people have lots of reasons not to get involved.
There's no limit to the business value that can be derived from parsing, appropriately contextualizing, classifying, and extracting text with NLP.
Machine learning is a part of many AI applications. The learning process is iterative; first, part of a dataset is input and analyzed, and a model is developed based on patterns and correlations among the factors in the analyses.