>With the hardware vendor, iMessage isn't used because it's necessarily better but because it is a forced automatic sign up when you use their phone.

Agree to disagree I guess. It is "forced automatic sign up" to use GooglePlayServices when you use android. Using microG is significantly more complicated than unenrolling from iMessage, and you can go to Settings>Messages>iMessage to switch it to just plain SMS, if thats really your prerogative(I've done this when traveling overseas).

To me iMessage is unequivocally better because I'm not the product the way I am on most(all?) trivial to use free services(spinning up a Matrix/IRC/etc server is not trivial). I pay for hardware that has an ability, in this case to use iMessage and Facetime, and in return I'm given some level of assurance that my actions on those platforms aren't going to be monetized through advertisement and leaking of PII. Being able to receive high quality photos from my family through an easy to use interface when I'm not at home without some surveillance corp knowing my location is a good deal to me. My Apple devices last a long time and require minimal upkeep.

>Apple does not care about iMessage as a platform. They only care that it is difficult to leave it.
I agree, they could offer iMessage on Android for a monthly/yearly fee like they do Apple Music. I would heavily support this and I'm sure they would lose some market share. To play devils advocate, I'm not savvy to the calculus on developing such an app and API scheme to prevent users from using an alternate client, and they would have no control over, say, an android keyboard keylogging/screen reading their user's messages, I guess they could implement their own secure Apple keyboard for the App, I think password managers do this? But this is starting to seem like a pretty significant engineering burden, that would probably make the service unrealistically expensive. idk. Security is part of the implicit marketing of iMessage, it's pay to use not use to be used. That said, I have no doubt that the driving reason for not opening up iMessage is because it keeps people, especially in the US, locked in to iPhones. Trying to keep customers locked in is pretty standard business practice though. So you can hang your hat on me and others with a similar point of view being okay with abusive business practices if you like.

That said, I do think that

> you have to very manually and very unintuitively de-enroll your number from iMessage.

Is scummy. No bones about it, if you wipe your iPhone it should ask you right then and there if you want to unenroll your number from iMessage, and they should monitor delivery and email you if they suspect that you no longer have an iPhone asking if you want to unenroll from iMessage delivery(e.g. you broke your iPhone and replaced it with another product). Writing the email would be very difficult though, many naive users would probably be alarmed that Apple can tell if they receive messages. But it should be easy not hard, the current experience is terrible indeed.

And while I'm at it, you should be able to have a first class Apple experience without an iPhone. Specifically I should be able to pair my Apple Watch with an iPad or iPod.