Many clients of these services have agreements that require them to contribute data back (or at least they get a discount for doing it). I worked for a telepho

Many clients of these services have agreements that require them to contribute data back (or at least they get a discount for doing it). I worked for a telephone company that used a service like this a long time ago and we shoveled customer data back at the provider. We did NOT give them call records though. Almost any medium sized company you deal with is selling your data.