This seems divorced from reality. Just because a new phone is released every year, it doesn't mean you need to buy a new one every year.
Small, incremental improvements each year means that whenever you buy a new device, it's modern (not using 4 year old components), and substantially 'better' than the previous one.
Small, incremental improvements each year means that whenever you buy a new device, it's modern (not using 4 year old components), and substantially 'better' than the previous one.