Can it get 10x better with the current approach though? As it is trained with content written by humans isn't that a natural ceiling ?
But my thinking is that 30-50 years isn't that long, compared to the magnitude of the changes in the nature of knowledge work that may become possible.
Individual human knowledge workers aren't limited by the breadth and depth of available knowledge, the way they were up to about 100 years ago, but by their ability to assimilate and leverage it. That's also what limits the machine models. But the models will keep getting better, while we won't.