What would you discover if you asked IT employees to write down everything they do throughout the day?
You would likely discover that an inordinate proportion of their time is spent on recurring tasks that do not bring your business forward, on a deluge of similar support tickets. You'd feel like a homeowner routinely replacing the same pipes in his crawl-space with no money left for maintenance and improvements in the rest of his house.
The good news is that with a mixed software infrastructure built on Open Source tools, in-house and in the cloud, there is less complexity, less futile upgrades, and less purchases, so there is less of all this in the itemized report we submit to our clients. There, you will see a house being built and well maintained.
Everything your IT staff does for you should be compiled in reports, installation instructions, charts, and training material (network, cabling/Wi-Fi systems, server content, cloud resources, devices, apps, etc.). Your IT staff should never have to troubleshoot the same issue twice. Everything should be clearly documented.
Our clients' IT house is in order, and they have something to show for it. Any potential buyer would know what he is getting.