> Reread the thread. In this thread, the OP is speaking about design obsolescence.

I don’t need to reread it. My response applies to design obsolescence.

Relatively few people upgrade every year these days. The fact that the old devices are still desirable negates the idea that people don’t want them because they look outdated. I.e. changes in design are not causing people to stop using the devices.

For design obsolescence to apply to Apple, workable devices would need to be retired from service early because they were no longer seen as desirable.

That isn’t happening.

I don't think what you are stating is the definition for planned obsolescence. For example, even though there is a used car market, the fact that someone upgrades their car due to fashion means it's planned obsolescence. In fact, that's where the term was born.

> Relatively few people upgrade every year these days.

[Citation needed]

No - this is trivially googled.

Compare phones sold to phones in service.

Tens of millions vs more then a billion.