I wouldn't really call theft of services "stealing", but I'm not a native speaker. Maybe that's something people say.

> Pirating is theft.

Do you mean copyright violations or ship piracy?

I don't see how this follows, because torrenting a movie doesn't take a service from the movie right holder. They wouldn't even notice if they wouldn't actively monitor torrent users. Theft of service is a crime because it causes unpaid work for the service provider, right? That's why I said the gym analogy doesn't apply here.