POE also is point to point, and currently tops out at 30W per link. You could split it off in a socket - but that reduces the available power per device even more.
Or we could use the current AC cabling where we use a single wire over multiple sockets and get a combined 3600W over a standard 16A fuse over 1.5mm2 wire - which with ground and neutral is about the same thickness as a shielded ethernet cable.