The best data set will in general only be as good as the raw data that was used to prepare it. I think you underestimate just how far along Google is with resp

The best data set will in general only be as good as the raw data that was used to prepare it. I think you underestimate just how far along Google is with respect to the huge amounts of raw data they handle. They've been around for 20 years now and amassed a lot of expertise handling all kinds of data imaginable at scale. If you disagree, who would you say is ahead of Google wrt general data sets that are valuable?