People are attacked <i>physically</i> over tiny sums of money. Occasionally someone is <i>murdered</i> over sums small and moderate sums of money.<p>If people can be tempted by money to commit terrible crimes of violence, we should expect it would be easier to tempt someone with either larger amounts of money or less risk of getting caught.\<p>Mining data - from any source - is a lot less risky than murder, with a very low probability of being caught. Sometimes, selling data can be incredibly profitable.<p>What is the probability that all of the current <i>and future</i> people at google will overcome that temptation? Even if people currently at google somehow resist the temptation, the open-ended nature of the data means that <i>someone</i> will eventually break.