[makeitdouble]

There is something to say about the platform setting the bar too low.

You're right that people move to third party clients, but the issue with Apple/Google screwing messaging is the third party services become de-facto while being sub-par.

In particular rival services don't get privileged access, which impacts either service quality (in particular conditions to receive a message) or user QOL (battery drain, core featuees implementation lag etc.). Line is a prime example of that, with a crazy wide audience in specific countries yet it became a pile of turd software wise, being optimal on neither platform.

The default messaging app being somewhat interoperable is IMHO a huge deal.