that kind of statement is harsh. what gives you a guarantee that any other paid service is not going to do this "machine learning" on your data. has Google ever made public your data?
Compare it to Google, where they can operate under a loss for a particular service (like Google Photos) in order to increase profits in a different market (like AI recognition tools). Once they are done with whatever they wanted to do, they can close down the service without much consequence, the business lives on.