Earlier quoted context omitted.
Much of what I read – on linguistics, art cinema, or art music – is published by academic presses. No matter how much a scholarly publication might interest the general public, those books are usually priced at a level where only university libraries, and occasionally hired faculty, are expected to actually buy them. The retail price of what I have read in the last month alone already goes into the thousands of euro.…
Just a data point here but I am an aspiring author who negotiated with several university presses and ended up going with a small independent press instead and I strongly disagree on the audience you mentioned in your first paragraph. That may be the built in readership, but authors desperately want to reach larger audiences, even through academic presses, and often can exert little independent control over pricing.…
Furthermore, I question your claim that me purchasing a scholar’s book would benefit hurting authors. At least within my own discipline (I’m an occasional researcher when a funded project comes along, and I have published on a number of occasions) authors do not materially benefit from publishing a monograph, getting an article into a collection, or serving as an editor of a collection. It’s all for prestige/career advancement alone. In fact, the PDFs on LibGen are sometimes surreptitiously uploaded by authors themselves, who have little love for the big academic publishers like Brill.
There are two cases in my own discipline where authors do care about sales. One is textbooks, and the other is a case where a group of scholars came together to found their own press so they wouldn’t have to deal with the big corporate publishers any more. But those do not form a significant part of my own reading.