The entire editorial staff of a prestigious have resigned in protest over the high cost of subscribing to the journal, and the refusal of the journal’s publisher, Elsevier, to convert the title completely to open access.
The open access movement formally began about 15 years ago. Since then, there have been increasing calls from academics and universities to adopt its business model for publishing research results. One reason is that most such work is funded by the taxpayer, so it is unfair to expect people to pay again to read the results of the research when it is published in traditional journals.
The other reason is straight up price-gouging: science publishers have pushed up journal prices to such an extent that many libraries struggle to provide the titles their researchers need.