Why are static arrays not ranges?

[Jack Stouffer via Digitalmars-d-learn]

import std.range;

void main() {
    int[6] a = [1, 2, 3, 4, 5, 6];
    pragma(msg, isInputRange!(typeof(a)));
    pragma(msg, isForwardRange!(typeof(a)));
    pragma(msg, isRandomAccessRange!(typeof(a)));
}

$ dmd -run test.d
false
false
false

That's ridiculous. Do I have to wrap my static arrays in structs 
to get range primitives?

Is there an actual reason for this?