How far do you think is the next local maximum from the current C one? I'm asking in terms of power of displacement of the status quo. Do you think it involves Lisp in one way or another?
The Lisp and C worlds are already kind of converging in languages like Python, Swift, Go and others. Unfortunately, as far as predicting what will happen, I can only quote the late, great Carl Sagan and say that prophecy is a lost art.