With how advanced computers, materials and manufacturing processes are becoming are we heading toward a time when everything will sound great but kind of the same?
I can point to a number of brands which have lost their color in recent memory, but I can also point to a number which have not or which are pushing the envelope for distinctive sound signatures.
Speaker driver technology, subwoofers and better automatic room correction are not making things flat, but glorious, enabling modest systems to sound like giants.
I think there will always be some neutral point equipment dances around, and a variety of solutions especially in the speaker arena. I'm not worried about a singularity vanquishing variety any time soon.