Small objective differences create vast differences in outcomes. Those things where that isn't true have already been automated away or commodified so there's very little margin left anyway.
It might be true in a misleading sense that the AI {product} is some large fraction of a genuine {product}, but that doesn't mean anything because the value is contained in those differences above the AI produced baseline. The value floor, so to speak, is a lot higher, but the ceiling hasn't risen an inch.
Those that move down in quality to preserve margin will soon discover there's not a there there.