Microsoft also still sometimes provide updates for > 20 years old Windows XP, while Apple stop providing security updates only after a few years, which is a shame.
I never thought Mac OS releases were planned for longevity after they started being free, more like point releases. You were expected to upgrade and if you didn't, Apple doesn't care if you had a valid reason to stay (PPC Rosetta, i386 compatibility), just upgrade. Windows releases on the other hand can last up to 13 years and even longer, there are forums for modern day XP users and even ports of modern browsers.
Apple provides about 10 years on computers and 7 years on devices. WindowsXP provided about 8 years of mainstream support. They offered extended support to business for 13 years for a premium but even that has expired. They will soon stop supporting computers without tpm 2 on windows 11.