Why, though? Does your average iPhone user actually care if the bubbles they see in their chats are blue or green? If so, why?
Note that I'm talking about average users. Sure, there are likely a bunch of privacy-conscious users who believe in Apple's commitment to security and privacy and prefer iMessage on those grounds. But otherwise, why?
> It would in fact disappoint many people as now they can't use their phone to distance themselves from the people who don't have that blue circle.
If that's truly the case, I don't think I'd want to be friends with people who place importance on such superficial, trivial things.
Full disclosure: I've been an Android user for 10 years and the closest I ever got to owning an iPhone was an iPod Touch I stopped using in 2012 or so. SMS is fine for my needs most of the time, though MMS for group texting is ridiculously unreliable so I try to funnel people to Signal or WhatsApp for those use-cases.
I guess I just don't see a closed iMessage as that huge of a competitive advantage for Apple. But presumably they know better as to what drives sales.