[faet]

Apple will be pushing for RCS/Carriers to adopt e2e, but it'll probably just flag green/notify users that messages are not encrypted.

[threeseed]

As someone who has worked for two carriers Apple, Google etc have little clout.

Governments and their intelligence organisations are what matters.

And countries like UK will be pushing as hard as possible to make E2EE optional.

[lxgr]

Anything that needs the participation of every carrier on the planet is doomed from the get-go.