Oasis (the Minecraft world model) can serve about 5 players on 8 H100 in real-time at 20fps in 360p. This is a much more capable model with two orders of magnitude more context. They pretty much say it can't be played real-time, which I read as they generate less than 15fps@240p on 8 GPUs. Probably why they talk so much about using it for AI training and evaluation rather than human use. There is a distilled version that works in real-time, but they don't show anything from that version (which is a statement in itself).

For reducing the price, ASICs like etched may be the way forwards [1]. The models will get bigger for a time, but there may be a lot of room for models that can exploit purpose-built hardware.

1: https://www.etched.com