First, it's not just security. It's also, does this message cost money or not. Blue sky, text freely. Green could cost money by hitting your SMS message bill

First, it's not just security. It's also, does this message cost money or not. Blue sky, text freely. Green could cost money by hitting your SMS message bill. This color difference matters even if you don't care about security at all. . . . Second: > That's pretty clear. If Apple's customers want to be able to use iMessage for such communications then (1) the Android user buys an Apple product, (2) a third party makes a cross-platform iMessage client, or (3) Apple open iMessage to other platforms. Apple is blocking on (2) and (3). Option 4, run any other app that's on both platforms, which is what most of the world does anyway, including any iPhone user I know in the US who chats regularly with anyone International. For EU it's WhatsApp, China WeChat, and in USA it's privacy minded Signal, PTA parents Facebook Messenger, etc. Given no cross platform is blocked, you'll see many iPhones do not have Messages in the launch bar, but one of those others. This seems ... fine!