How long before we simply hit 'go' on a relatively dumb AI that can methodically work through all recorded data? It feels only a few years before most of what c

How long before we simply hit 'go' on a relatively dumb AI that can methodically work through all recorded data? It feels only a few years before most of what can be mapped, will be mapped. This seems like personal data that is hard to obscure - I (As a private person) am assuming that this will be public record.