I downvoted this because you're ignoring iMessage. The fact that Apple purposefully not only gives Android users a shitty experience when communicating with iOS users, but also ensures that the presence of an Android user can break the experience for everyone else in a group chat (e.g. degraded videos now for everyone) in iMessage is a blatant attempt to abuse their monopoly power (in the US at least where iMessage dominates). I've been an Android user for years and am reluctantly seriously considering getting an iPhone solely because my friends bitch at me all the time when I'm in a group chat.
Apple doesn't even need to make an Android version of iMessage, they just need to support RCS instead of SMS/MMS: https://www.android.com/get-the-message/