Consultants Rob Johnson and Andrea Chiarelli, in a Scholarly Kitchen post:

Journals with strong brands, or in fields that have yet to show much interest in preprints, may therefore find that a wait-and-see strategy serves them best. It remains unclear how many of the new crop of preprint servers will be able to develop a sustainable business model, and the recent decision by PeerJ to stop accepting new preprints lends credence to a cautious approach.

It’s eerie to overhear, in effect, publisher trepidation about the preprint surge. The nonprofit, community-governed world of preprints is an enigma for the big for-profits, since they can’t easily skim 37% off the top.