So to be clear I generally agree w Amadeo's point, as I'd much rather see every chat network built on top of phone numbers die out like the widespread use of ICQ. Personally I'm much more interested in seeing something like Matrix take hold, because to me a Web-based model, with some sort of user@site identifier and, incidentally, the ability to deploy one yourself, are non-negotiables for anything I adopt as a primary communication spec in the future.

But this isn't about the use of Web-based services, this is about a text client. That's not going to just disappear anytime in the near future, it isn't reasonable to compare them to better chat networks when we're specifically talking about fallbacks, and whether they have incentive to implement a standard for it doesn't mean they should just have free reign to promote ecosystem lock-in for the basic functionality of a phone.

And do I also agree that the implementation of RCS has been less than stellar, but that's in part because of fragmented adoption among vendors, which is a problem that Apple is a part of.

(And speaking of ways that markets are worse because they don't have "incentives" to adopt standards, I forgot to mention their continued use of Lightning.)