I don't really get your questions. Elsevier was never the one who demanded that MIT published research, so this shouldn't change anything there. When a researc

I don't really get your questions. Elsevier was never the one who demanded that MIT published research, so this shouldn't change anything there. When a researcher publishes with Elsevier, the common practice when not transferring copyright is to give them a perpetual licence to publish the work. Additionally, presumably MIT requires their researchers to publish their work as Open Access, i.e. with a licence that allows re-use and distribution for everyone - so they cannot disallow use of the contents of the papers arbitrarily. Elsevier is not needed for that.