Organizing cables is actually pretty difficult.

What you generally want is:

• Cables out of the way, even hidden
• Everything very easily unpluggable at once for lightning storms
• The identity of the appliance unambiguous from its plug
• The power block very easily accessible to encourage maintenance
• No tangling, so no unaccounted for extra cable length
• The setup easily modifiable, so preferably no drilling, stapling, gluing, screwing, nailing, sanding, taping, labeling, etc
• As little as possible plugged in while off, slow-draining
• As little as possible plugged in and on while not in use

When you think about this, you realize it may be an impossible task. Putting cables out of the way means making appliances difficult to rearrange. You have to crawl under your desk, pull it away from the wall, shift the large TV set, etc. It also obfuscates the connection between plug and appliance, as the cable is in hiding. Clearly identifying plugs means labeling them, which means you can't hot-swap extensions without ruining the system. Making labels easily switchable or modifiable means the words are likely to rub off or the tags fall off. When you wind up cables to pick up slack, suddenly it's much harder to move items around. And this compounds: you move one item, it pulls on another, but that one can't move, and this other one can't move, and this other... When you think everything's finally set up for most use cases, you realize that too much is plugged in and you're wasting electricity. When you unplug items, the plugs get lost in the shuffle, so you're even less likely to want to use those appliances, so the plugs get even more lost and their cables even more tangled...