So what you're trying to do is prevent wholesale copying from competitors? The trick here is the agency doing the copying. You want to say that users can copy

So what you're trying to do is prevent wholesale copying from competitors? The trick here is the agency doing the copying. You want to say that users can copy it, but that third parties can't. My suggestion would be to be very clear that what you're talking about is bulk copying by competitors, and prevent it by requiring users to initiate copies, rather than third parties.