https://www.consumeraffairs.com/cell_phones/cell-phone-stati...

> A shocking number of people (12%) upgrade their phones every year

That's about 40 million people in the US, btw.

Lots of people spend money on luxuries. Nails, leased cars, restaurants, etc. I am not seeing a measurable difference in the occurrence of people spending unnecessarily on phones vs other luxuries, such that Apple could be credited with an abnormal level of success.

Most people are using their devices as long as they can.