It's pretty well understood (and was at the time) that the project was aimed at collecting voice sample data for further voice-recognition and AI work:
"Google Shuts Down GOOG-411" (October 9, 2010)
The service has helped Google build a large database of voice samples and improved the voice recognition technology. Here's what Google's Marissa Mayer said about GOOG-411:
"The speech recognition experts that we have say: If you want us to build a really robust speech model, we need a lot of phonemes, which is a syllable as spoken by a particular voice with a particular intonation. So we need a lot of people talking, saying things so that we can ultimately train off of that. ... So 1-800-GOOG-411 is about that: Getting a bunch of different speech samples so that when you call up or we're trying to get the voice out of video, we can do it with high accuracy."
""The 411 Parable": Make sure you are playing the same game." (2011)
But just when the "head-to-head" competition was rolling Google announced GOOG-411 was no more... they'd captured all the human speech they needed to train their algorithms and were on to bigger and better things... Huh, voice recognition... algorithms?
"Google Shuts Down GOOG-411" (October 9, 2010)
The service has helped Google build a large database of voice samples and improved the voice recognition technology. Here's what Google's Marissa Mayer said about GOOG-411:
"The speech recognition experts that we have say: If you want us to build a really robust speech model, we need a lot of phonemes, which is a syllable as spoken by a particular voice with a particular intonation. So we need a lot of people talking, saying things so that we can ultimately train off of that. ... So 1-800-GOOG-411 is about that: Getting a bunch of different speech samples so that when you call up or we're trying to get the voice out of video, we can do it with high accuracy."
<https://googlesystem.blogspot.com/2010/10/google-shuts-down-...>
""The 411 Parable": Make sure you are playing the same game." (2011)
But just when the "head-to-head" competition was rolling Google announced GOOG-411 was no more... they'd captured all the human speech they needed to train their algorithms and were on to bigger and better things... Huh, voice recognition... algorithms?
<https://web.archive.org/web/20130810032940/http://buildconte...>
Not that the sudden death didn't kill what was at the time a useful service, and squander goodwill in the process.