Maybe people are still in a denial that all companies want is some LeetCode and funny scripting languages.
Does TAOCP help me with that? Well, maybe, mostly no though. I still treasure the parts I've read (I freely admit not having read all of it, but some parts and done some of the exercises) even if from some strict capitalist time = money point of view they probably wouldn't have been worth it.
Edit: for instance, there is now a SIMD article on HN #1; how many people actually are really interested in that? Those should overlap the people who would enjoy these books.