In reply to Emanuil Tolev.

I'll have to write the post but the core of it is this: if you follow the thread from this post ( http://cameronneylon.net/blog/pushing-costs-upstream-and-risks-downstream-making-a-journal-publisher-profitable/) to this one from Roger Schonfeld ( https://scholarlykitchen.sspnet.org/2018/01/02/workflow-lock-taxonomy/) then a very profitable route (particularly for subscription publishers but not exclusively) is to red-flag papers from particular places and people to save money. And all of this can be done silently. At least one publisher used to simply block reject very paper that came from Iran for instance, but you can imagine a prestige journal just dumping anything from unknown authors or developing countries and it never becoming visible.