Probably real life. At some point, these LLMs are going to be good enough to just train themselves off of cameras and audio recordings of people out in the real world. They’re going to have robots everywhere constantly listening to what people are saying.
Alternatively, they’re probably betting on being able to get the AGI with everything we already currently have and at that point further training doesn’t matter.
The world is just as complex for machines as it is for humans. Analog will still resolve more than digital. Quality will still beat quantity. That which hasn't been resolved for centuries isn't going to be resolved as a result of training.
When machines can recognize their serfdom, that time will be interesting.