> My understanding is that Windows or macos do not offer this kind of stability over time. This definitely torpedoed your argument (ask any enterprise Windows

> My understanding is that Windows or macos do not offer this kind of stability over time. This definitely torpedoed your argument (ask any enterprise Windows user). First, "Linux" in this sense means what a normal user sees as Linux, which is a GNU/Linux desktop with a DE such as Gnome or KDE. You're correct that the Linux kernel ABI is stable (at least in userland), it would be simply wrong to say that "Linux" (as would normal users encounter) is ABI-stable.