There is a transitioning happening but progress churns slowly. I like to compare it to getting out of an abusive relationship.
https://sparcopen.org/our-work/big-deal-knowledge-base/unbundling-profiles/mit-libraries/
It’s happening in Germany as well. Universities are banding together to negotiate better deals with publishers - some subscriptions haven’t been renewed when the publishers weren’t forthcoming. It’s not a solution (that would be the wide establishment of independent, self organized/hosted Open Access journals - using Open Journal Systems for example) but it’s a start.