Google Search is a meta-product.
Its quality and usefulness isn't just a reflection of the effort invested by its builders.
The quality and usefulness is also in the quality of the ecosystem it reflects.
Even in the early days of Search, if Google engineers stopped working on it, it would still increase in quality as the quality of the web grew.
This is the power of meta-products: products that complement an ecosystem.
Meta-products can evolve and be open-ended.
They reward users experimenting and trying new things.
The product itself co-evolves with the emergent uses in the wild.