News 3,000W PSUs are taking over Computex — Seasonic and Superflower debut behemoth power supplies

A fine example of a product designed for bragging rights. There just aren't setups using ATX standards that can utilize this much power. AI/HPC can use that much, but those systems can't use ATX. SLI isn't a thing with modern GPUs. Every one of these is going to be used to power a single CPU and GPU and the PS won't ever go above 50% utilization.
 
And a lot depends on where you live. In most of the U.S. houses are normally wired for either 1800 watt or 2400 watt circuits. So people would need to have a special 25 amp circuit installed just to drive their computer power supply. Perhaps something similar to the circuits for electric stoves, clothes dryers and air conditioners. Or perhaps a special 240V circuit. And probably a second circuit for the monitor, printer, audio, etc. Hopefully users won't risk running these on underpowered circuits and burn their house down. Maybe it won't be as bad for some businesses but how many will be willing to spend for the extra wiring, especially if they're leasing their site.
 
And a lot depends on where you live. In most of the U.S. houses are normally wired for either 1800 watt or 2400 watt circuits. So people would need to have a special 25 amp circuit installed just to drive their computer power supply. Perhaps something similar to the circuits for electric stoves, clothes dryers and air conditioners. Or perhaps a special 240V circuit. And probably a second circuit for the monitor, printer, audio, etc. Hopefully users won't risk running these on underpowered circuits and burn their house down. Maybe it won't be as bad for some businesses but how many will be willing to spend for the extra wiring, especially if they're leasing their site.
Fortunately circuit breakers will trip before fires start.
If properly wired...
But your point is valid. If you intend to really pull close to full capacity power, you're going to want a 220/240 outlet that is capable of 15-20A.
The average user isn't going to go there, or they will only use a fraction of the max power as it'll be tripping their breaker.
 
A fine example of a product designed for bragging rights. There just aren't setups using ATX standards that can utilize this much power. AI/HPC can use that much, but those systems can't use ATX. SLI isn't a thing with modern GPUs. Every one of these is going to be used to power a single CPU and GPU and the PS won't ever go above 50% utilization.
Atx is the standard for AI workstations, and that's exactly what this is targeted at.