I mean this could happen in Europe, but I suspect something as integral to design/engineering might have Apple wanting to go ahead and split the designs between Europe and other markets. They just love control too much I think to go big in on this feature everywhere.
I had my iPhone X for 3 years and would have kept my 12 Pro for 3 years, but the 14 Pros came in purple and I decided to go for it. I fully intend on keeping my 14 Pro for at least 3 years. Maybe even go 4 this time around and just get the battery replaced at the end of year 2. I don’t game on my phone at all, I have lots of other devices for that, so I don’t need the latest and greatest every year.