Most concepts embedded in C++ were originally developed in academic languages. It's not always about the languages academia developed; it's about how they influenced the languages that everyone uses.
Once again, your definition of industrial usefulness ignores most real-life problems. A huge number of computer people run servers; they may not touch a compiled language for years on end, but write and edit in scripting languages all day long. Or they may maintain websites or write Java games to be played on line, or program off-line games in Python, like Civ 4. Not every real life problem is to be tackled with C++.
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