you could ask that question about just about anything. why am i still stuck in traffic light system from like the 1920s and waste half my time there... hmm... showerthoughts....  why doesn't no one do anything useful or beneficial? because they're very dumb, and a lot of ideas are impractical to implement without having a lot of authority. if you're the dictator, you can simply declare that all buildings should be built out of white marble, and then it happens. but there's no way for me to get traffic to move faster, by digging tunnels and bridges and whatnot... anywhere on earth, for over 100 years.
National Bolshevik