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Yeah, I'm not sure what kinds of data Google might get from being a DNS resolver that it doesn't already get from people using Google Search.

Maybe competitive analysis (like, to get rough real time numbers of people that use Bing, etc.)? Though that's super niche and there's probably way cheaper ways to get that data.

Maybe it's a Fiber or internet.org kind of play, where by improving infra and access, you expand your own already-saturated market.

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> Maybe it's a Fiber or internet.org kind of play

Maybe this is the exact reason + some data mining bonus (Not important, but Google can still do it).

Also, if Google is an ISP, without hosting it's own DNS service (Have to rely on other ISP's service) is dangerous.

>some data mining bonus

Its worth noting that Google publicly documents what data they retain from their DNS service requests.

https://developers.google.com/speed/public-dns/privacy

Yeah, I'm not sure what kinds of data Google might get from being a DNS resolver that it doesn't already get from people using Google Search.

They get to know all your non-HTTP(S) traffic too, of course. Other protocols still exist! Where you make POP3/IMAP/SMTP connections, where you SSH to, that kind of thing.

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