>run it at ~250W for average play time (4-8 hrs a day) I think this is the important aspect. If you're only using it for a few hours a day, the hardware can be

>run it at ~250W for average play time (4-8 hrs a day) I think this is the important aspect. If you're only using it for a few hours a day, the hardware can be used for someone else while you're not playing. So it runs into the same issue as autonomous taxis: the hardware is only useful in a narrow region and most users want to have their go at the same time.