I wondered where Apple and Microsoft were in this whole thing and I found this from one of the Chromium trust discussions:
"Assessing the compatibility risk with both Edge and Safari is difficult, because neither Microsoft nor Apple communicate publicly about their changes in trust prior to enacting them."
Why or why not would you want to withhold this kind of information?
To some degree, I believe Microsoft and Apple want to avoid any risk of being seen to collude with other vendors to essentially destroy the business of another company.
Both have company cultures built upon secrecy as the base value, I believe. "Why would you want to withhold this kind of information?" then answers with "Because you want to withhold any information, except on a need-to-know basis."
"Assessing the compatibility risk with both Edge and Safari is difficult, because neither Microsoft nor Apple communicate publicly about their changes in trust prior to enacting them."
Why or why not would you want to withhold this kind of information?