I can see that I am not the only one whose life was changed by those early experiences with the Apple ecosystem. From my own 30-year-old memories:
On any given afternoon around 1981-1982, the geeks at my middle school could all be found gathered around a dozen Apple II+ and Apple IIe machines in the computer room. The British instructor who had set them up and taught us code fundamentals really encouraged us to explore and experiment (and fought a losing battle to keep us from bringing our game floppies into the room).
I'm another dev whose first computer was an apple IIgs. I don't know if I'd be a dev today if I hadn't spent far too many hours poking around in basic typing in games from magazine, modifying them, and writing my own.
For purely selfish reasons -- what could Steve have imagined next? -- he passed far too soon.
Given that it takes years for a big thing to pass through the dev cycle and come to market, you're still going to see some things that were up his sleeve.