I doubt they care if a single user is stolen from rapportive. There are a massive number of gmail accounts and all of those people that have never heard of rapp

I doubt they care if a single user is stolen from rapportive. There are a massive number of gmail accounts and all of those people that have never heard of rapportive will now have a new feature they may benefit from in some way. For the small percentage of gmail users that have heard of rapportive and have chosen not to use it for whatever reason (trust/security) we also may see some rapportive like benefit. While this is clearly inspired by rapportive I can't imagine the goal was to steal users from them.