As someone who publishes regularly, has organized conferences and seen this from multiple angles, publishers add marginal value to the publication process and it is no longer worth what they charge--to the point that I think their existence is parasitic on the process. They're usually paid from a combination of conference budget (subsidized by ACM, but usually a break-even prospect with enough attendees) and the author fees.

For several conferences I have been involved with, the publishers' duties included the princely tasks of nagging authors for copyright forms, counting pages, running some shell scripts over the LaTeX, and nagging about bad margins, improperly capitalized section headers, and captions being incorrectly above figures.

Frankly, in the digital age, the "publishers" are vestigial and subtractive from the Scientific process.

This is on purpose, the industry was forged by someone explicitly trying to get rich off of a public resource. https://podcasts.apple.com/mz/podcast/part-one-robert-maxwel...

Agreed. Also the claims that the fees are for typesetting and the like are highly suspect, given how specific so many journals' formatting requirements are. As poster above says, if they were spending any significant amount of money on typesetting and the like, you wouldn't have strange nags about margins and capitalization and other formatting nonsense, so it is clear they basically do almost nothing on this front.

If they did any serious typesetting, they'd be fine with a simple Markdown or e.g. RMarkdown file, BibTeX and/or other standard format bibliography file, and figures meeting certain specifications, but instead, you often get demands for Word files that meet specific text size and margin requirements, or to use LaTeX templates. There are exceptions to this, of course.

Are you talking only about conference papers? What about those submitted to Nature, Science, etc.?

And who will curate the best research, especially for people outside your field? I can't follow the discussion in every field.