I also doubt the engineers at Texas Instruments thought that enabling programs on my TI-84 would spawn my or many others' passion for programming. It was simply coincidence paired with curiosity.
I think curious children of the right mindset will find the opportunity to learn whether we intentionally pursue it or not. In fact, by planning out learning environments for those kids we might be doing them a disservice by structuring their learning towards what WE think is important at a particular moment in time.
But sure, flying car software should be open source.