Well, it was free to anyone who bought the system, right? It's the same way it's done today: Macs aren't free, but anyone with a Mac gets the full version of Xc

Well, it was free to anyone who bought the system, right? It's the same way it's done today: Macs aren't free, but anyone with a Mac gets the full version of Xcode at no extra cost. Contrast that with Windows, that requires you to pay hundreds or thousands for the "professional" versions of Visual Studio.