I would say that this is true for unstructured data that does not have availability of experts who participated in the creation of that data. I noticed that by

I would say that this is true for unstructured data that does not have availability of experts who participated in the creation of that data. I noticed that by talking with the domain experts, for example radiologists that read head MRIs, you can greatly simplify the problem. It usually comes at the cost of experts annotating the data, which might be too expensive for some businesses. But then, I think, the data is analyzed just by scholars until they built-in the expert knowledge into their algorithms. That's at least the pattern in healthcare data. The first one to notice a paper or source code like that dominates the market - this is just my conjecture.