Low-voltage DC is just USB now
"Low-voltage DC is just USB now."
How many home electronics gadgets (apart from, perhaps, TVs, and I wouldn't be surprised if you could even power LCD TVs over USB-C) actually need a mains voltage supply these days?
I bought a small desk fan recently that runs off a USB-A socket rather than mains directly (so I could even run it off my computer, if I wanted). With the extra power that you can get from USB-C, it should really now be the universal power supply for everything that it can handle. I'm sure we all have assorted gadgets, from shavers and electric toothbrushes, to clock radios and bedside lights, etc, all of which would probably work fine from USB-C supplies. And we wouldn't need to festoon our rooms with huge and ugly multi-way mains plug cables (yes, UK plugs, I am especially looking at you), you could fit about a dozen USB-C ports into the space of one or two mains plug sockets on the extension cable, and then only need the one mains plug to actually plug into the wall.