My mom still uses my 2006 Mac Mini Core Duo running Windows 7 when she has students over when she tutors.
Her main computer is a 2007 era Sony Viao Core Duo with 2GB of RAM running Windows 7 and Office.
I'm using a 2008 Core 2 Duo 2.66Ghz Core 2 Duo with 4Gb of RAM as a Plex Server.
I just replaced a Pentium Dusl Core laptop with 4GB of RAM circa 2009 with a newer laptop. I still use it occasionally. It's my only computer with a DVD writer.
It helps that my main use of a computer involves work and my main laptop is work provided.
And the market is saturated exactly because the consumerist need to continuously renew the mobile phone is gone, beyond a few percent that always need to show they own the latest gizmos.
yet they keep raising prices of flagship to see where is the limit
or maybe it actually doesn't matter that shipments are failing since prices are going up and market it's already saturated outside third world countries like India and lower