According to https://worldpopulationreview.com/country-rankings/iphone-ma... iPhone also has > 50% market share in Canada, Norway, Sweden, Australia and Japan. FWIW I live in Australia and most group chats are via WhatsApp vs SMS/iMessage.

I didnt say this is so prevalent. Just that it exists.

My experience from few european countries is that middle class - tech/business/law people have iOS. Go to tech or business conference and its all iphones.

So its really easy to be in such circles. I live in EU country and its all iMessage or Signal. Nobody uses WhatsApp if something its Facebook Messenger or Instagram messages.