These are some network racks I've come across over the years. Some are mine, some aren't. I'm also not going to share any details about them like the company or physical location. Also, many of these are already 5+ years old, and I know for a fact that some of these businesses and/or locations no longer exist.

While not a rack, this one and the one below are in the same room. When the company I was with acquired this location, I was shocked by the massive size of this conduit for just the building ground, four ethernet cables (I'm assuming bonded T-1 from the previous company may have had), and then a cut loose ethernet cable. This was solid conduit at least though the suit and since it was just a branch office, no idea where it went. When we had fiber service installed, they didn't use the conduit. Cable service also didn't use this conduit so I don't think it was coming from the building DMARK.