The two most obvious answers are A) Not everyone buys phones at the same time you do and if the only iPhone on sale 2 weeks ago was the iPhone 12, they’d have

The two most obvious answers are A) Not everyone buys phones at the same time you do and if the only iPhone on sale 2 weeks ago was the iPhone 12, they’d have a lot of unhappy customers (and used / returned phone) when they released the 15. B) Product iteration, the same reason (and benefits) why so many software devs stopped rolling 2-3 years of updates into single big releases.