Money.

iPhone user here, because Apple likes money.

Scum company

Well, because it's Apple.

Because if they opened their walled off garden, there's a chance they might lose profit and if they do, their CEOs might not be able to afford their diamond studded swimming pools and solid gold Humvees. Those things don't grow on trees.

It's a very expensive walled garden

They're adopting RCS next year, what more do they need to do?

Putting iMessage on Android just gives them a whole lot more control over the messaging ecosystem.

There's dollars to be extracted.