I'm still uncertain about the language declaration syntax.
It's true that compared with the scene when Unix started, today the ecological niches are fairly full, and fresh new OS ideas are harder to come by, or at least to propagate.
A language that doesn't have everything is actually easier to program in than some that do
C is quirky, flawed, and an enormous success.
Obviously, the person who had most influence on my career was Ken Thompson.
C++ and Java, say, are presumably growing faster than plain C, but I bet C will still be around.