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Google.

All of Google's market advantage happened before their ML kick, and none of their continued success can be ascribed to it.

You can even argue for the opposite, since they went all in into ML, the product quality has at best stagnated.

Their product isn’t search, it’s tsrgetted ads. Have the ads gotten worse?

They have not become better (in my experience). The ads are still mostly irrelevant for me. (With no anti-tracking attempted by me.)

I don't really want to get into an argument over definitions, but IMO pagerank is pretty obviously machine learning.

That was my intention when writing the reply, yeah.