There's a huge difference in scale. The human mind can only process a limited portion of all works available over a lifetime. Human learning is therefore naturally limited to small-scale reuse, which serves to keep it proportional.
A machine training on all copyrighted materials in the world for commercial purposes at an industrial scale makes it disproportionate.
A machine training on all copyrighted materials in the world for commercial purposes at an industrial scale makes it disproportionate.