The Indian Express newspaper had an excellent article a few days ago (posted here by Ann Snoeyenbos of JHU) on their investigations into the state of predatory publishing in India (that article:  https://indianexpress.com/article/india/inside-indias-fake-research-paper-shops-pay-publish-profit-5265402/).  This was part of what they reported as an ongoing project involving journalists in numerous countries, notably Germany, France, and the US.  I've not seen reports from the other countries (to be anticipated in Suddeutsche Zeitung, Le Monde, and the New Yorker, inter alia), but the original article has now had response from the Minister of Human Resource Development in the Indian parliament: