I really wouldn’t, because I wouldn’t want to risk them succeeding. It could be like Meta with WhatsApp, they just say “sure anyone can interoperate with us, they just have to use the Signal protocol because it’s the safest and what we use”. Google et al could say “any system could be considered trusted, as long as these security criteria are met” and the criteria are such that they go completely against the form of user control of the OS and software that Linux is all about. Technically a Linux distro could be made to meet the requirements, but pretty much no current day Linux user would ever want to use it because they’d be giving up the thing that made them switch to Linux in the first place - their control.