To address your point, they are getting paid when someone buys and uses their product. Currently the $60 price tag includes usage of the game servers for a single person. If that person sells the game why should the new owner have to pay an additional cost? The old user is no longer using the servers and as far as EA is concerned their cost didn't change.
In other industries it's theft? I've never bought a new car so all the used cars I've bought have been theft? What about used cars that still had original warranties intact? Should I be forced to buy a new warranty since I wasn't the original person who purchased it, even though it's tied to the car?