Consumers don't necessarily want iPhone. They don't want to be excluded from iMessage, which is a completely different motivation.
US centric view, which I believe to be wrong. UK is predominantly WhatsApp, and the bulk of handsets sold are still iPhones.
Income is a much tighter correlation than messaging platform. Rack up those market shares by phone value and the scales tip even harder.
No one uses iMessage in my country. Yet iPhones are sought after. Some of us just really like iPhones for the experience - not everything is a conspiracy. People can have different tastes and are more free to choose than people on HN like to believe.
Yeah, that just doesn't pass the simplest sniff tests. I barely use iMessage, and yet I'm an iPhone user. Basically everyone around me is the same.