Yes, it would help US teens were convinced to use another communication app that treated people equally in a group regardless of their phones. But they are teen

Yes, it would help US teens were convinced to use another communication app that treated people equally in a group regardless of their phones. But they are teens and culture from network effects is hard to change. Or a much easier approach, Apple could fix that, if they wanted. But they don't because iPhones would lose their status symbol (blue bubble) and teens could then buy other phones without suffering rejection in groups. Apple can't have that. If culture among teens is hard to change and Apple values income above all, it's up to regulators. But US regulators aren't as active than EU.