You're correct - none. I could make the argument that many people would pay for the new upgrades to their compiler, text editor, etc at least yearly, but you're right that they didn't have to to continue using them. I'm not sure that matters though - even as a yearly fee, $99 just isn't that expensive compared to how thing were in this supposed Golden Age, even compared to the old one-off costs - especially inflation-adjusted.
To be clear, I'm not saying things wouldn't be better if this was all free of charge, or that Apple's tight grip on the platform is great for society (I think that's a different argument entirely). I'm just saying that the argument that everything was better and more accesible to new users in the old days is a bit of a 'rose tinted spectacles' one.