Why do you think they're fewer and farther between? It's almost certainly at least partially because of Chromebooks and the save-the-user-from-themself design philosophy.
I would say it's primarily because their phone (android or iphone) does nearly everything they would ever want a "computer" to do, and so they never had a hook into real curiosity about computing. This will probably be exactly the same whether the school supplies a Macbook Neo or a Chromebook.
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