I just seek the most accurate answer... Precise and accurate answer will do.

Ok: The question doesn't make sense. Go off and start learning some of these tools, and think about the question again in a few years time.

I think the screwdriver analogy fits better with language concepts (variables, arrays, loops, etc) rather than the language itself. You can use that screwdriver along with other tools to make a boat out wood, plastic or paper if you want but for big enterprise-level boats you will generally end up using metal. And the same goes for variables and other tools used in whatever languages may be used to build your application/game with C++ up there at the top still.

All current languages and possibly concepts will likely have a shelf-life though if and when quantum computers become available.

As for stagnation in the games industry I don't believe it has. Technologically it has slowed but new stuff is still coming all the time. Off the top of my head I can think of several in the last 5 years or so: deferred rendering, touch-screen gestures, Wii/Kinect inputs, and so on.

Creatively the big publishers, along with Hollywood, appear to have stagnated almost completely. That is mainly due to being answerable to shareholders who only want share prices to go up. The 'low hanging fruit' of risks and original ideas have largely been taken and safe sequels and formulaic marketing are the main route left open to them with sheer volume of sales being more important than ever. They simply have no other option left to avoid a stock crash. The creativity gap is being filled pretty well by indies now who can better afford to take risks or mix-up older ideas due to lower overheads, faster turnaround and far more modest needs in terms of sales.