Everything ages with time. It seems only the ancient Romans and Egyptians really had a handle on how to build immortal infrastructure. And there’s also the Great Wall of China. That has endured pretty well.
Your commercial building, however, is not the Great Wall of China, the Pyramids, or the Colosseum. All parts of it will age and need maintenance as well as eventual replacement of components. Regular upgrades are a basic part of running a business—and one upgrade that is often overlooked is the rewiring of the electrical system.