I share your concern for the livelihood of authors (and your skepticism regarding the naiveté that often surrounds pro-piracy rhetoric), but I don't think that's fair to the question here. Unlike in the case of music or film, most users are not just trying to get the latest NY Times best-selling novel. The percent of books made accessible through these services that are tied to an author's income through consumer sales is negligible. Most specialist literature, whether in the natural sciences or the humanities, is priced under the assumption that university libraries are the ones making the purchase, often more or less automatically. Yet even and perhaps especially in the US (I know nothing of the library culture in certain sanctioned countries), it's increasingly rare that university libraries have open stacks for non-students and there are incredibly few public libraries that actually provide access to scholarly works, past or present -- New York Public Library and the Library of Congress in DC are the ones I've used personally, but I'm sure there are a handful of others.

Moreover, however many countless AI companies now buying and pulping copies of every book in existence seems to be really changing the used book market. Prices are going up dramatically and before this year it was very rare to not find a single copy in the world of whatever old book one desired.

As someone who spends a disproportionate amount on books and shares your concern for not making life even more difficult for authors, these services going away would be a tremendous regression.