Well, that's true for the most common "vertical software" most developers create but it's not true for the inner parts like the kernel, system libraries etc, nor for the firmware or the hardware. That ship is a wonderful piece of engineering but so it is the smartphone you have in your pocket! And to go on, software "at scale" like Google's, Facebook's etc, keeping in mind only the technical merit, is just as awesome as that ship if you think about it. For example, searching billions of documents in just a fraction of a second, wherever you are and by millions of people at the same time, isn't a wonderful piece of engineering too?