I think it's a signal to noise thing. There are definitely good services out there. There are just as many terrible, predatory ones. And sometimes, more insidiously, a good service slowly transitions into a predatory service.
I'm definitely not really suggesting that people should never use any services. Just that in general, these should be viewed with suspicion, and you should have an exit plan: you could find out nefarious things about your service, or the service could be modified leaving you high and dry.
