I'd rather buy a WiFi router that gets its power over the ethernet cable that I have to run to the location I'm putting it anyways rather than place a USB-C outlet next to it so I can power it via USB-C. Same goes for small switches and other network enabled equipment, especially IoT stuff (if it's wired). Also, having one beefy PoE enabled switch in the basement providing power is much more efficient than having a bunch of small transformators around the building.
Now, charging Laptops on the other hand is a completely different story.