That is a good reason to think they did not but it doesn't necessarily override reasons for them to do so. Perhaps it's dubious that the subset of data they cou

That is a good reason to think they did not but it doesn't necessarily override reasons for them to do so. Perhaps it's dubious that the subset of data they could not legally get their hands on is an advantage for training but I really don't know, and maybe nobody does. Given that, Google's execs may have been in favor of similar operations as Facebook's and their lawyers may have been willing to approve them with similar justifications.