Having switched back to Android, it can be infuriating dealing with iPhone users. I get slammed with "messages" when someone reacts to a message and oftentimes, messages just don't show up or messages go to my iPad and not my phone. Apple makes this extremely confusing. The iPhone users never know of their message goes through or what they're actually sending to (my iCloud account or my phone number).
Having lived all over the world, but not the US, I don't think I've sent or received an SMS/text message once in the last decade (except for bad 2FA implementations). Apple's weird and semi-transparent (to the user) hybrid system of mixing a proprietary web protocol and SMS in the same app is obviously problematic, and the rest of the world moved on to other messaging services, but it's weird that the US is still stu…
iMessage bypassed the carrier tax, It's that simple. That's why it became popular, and that's why the network effects working against Whats App, Signal, and others are so strong. And it's why there's skepticism towards the standards that Google and carriers are pushing for, because a lot of people don't remember the carriers' business practices very fondly.