[traceroute66]

> But the latest and greatest Windows and Linux releases are installable on older devices.

So is OS X Big Sur[1] and Monterey[2]

For the majority of people all they need to do is pull their finger out and upgrade the OS from Catalina to Big Sur or Monterey.

    [1]https://support.apple.com/en-us/HT211238
    [2]https://support.apple.com/en-us/HT212551

[ccouzens]

Those show about 8 years. My 2011 iMac was dropped by Mojave (7 years).

Modern computers should last a lot longer than that, especially if you can pass them on to users with less demanding requirements.

And fortunately Macs do last longer than that, but you have to install Linux or Windows to keep them up to date.