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

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.