On 19 April 2021, Dimitra Kamarinou, Dave Michels, and Christopher Millard spoke about post-mortem access to cloud services at a Modern Law Review event on 'Emerging Technologies, Personality Laws and the Dead' on 19 April 2021. You can watch their video contribution to the event here: https://youtu.be/QotsVMwriSQ.
For an overview of the discussion at the event, see https://thefutureofprivacylaw.files.wordpress.com/2021/04/postmlr-position-paper_tech-personality-laws-and-the-dead.pdf.