the pre-Win95 world was exactly what you've described

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Just ... no.

revolutionary changes to entire industries

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iTunes.

the Navigator's development / changed the face of the World with its Wide ranging Web of connectivity.

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Developed on NextSTEP, at CERN - the epitome of a closed-shop* ivory tower with access to obscure but powerful tools.

(* strictly speaking, an open shop - but only if you were already playing with the big boys of science & academia)