I can see the argument for torrent over buy, but not really torrent over nothing.
Devil's advocate: You spend time consuming the thing you torrented instead of buying something that was legally available to you and consuming that instead. But yes, this is getting to "penumbric emanation"-level of arguing, though I think that the limited nature of your time is something that should be pointed out.
But this (if it happens at all) will frequently be offset by those who pirate now but might become legitimate clients in the future. People in this category might be students (no cash at the moment but will have in the future) or those pirating just to see if they like something (one of the reasons home taping never killed music - because through compilation tapes you had people doing your marketing for you and finding you new fans). In this instance you not only lose nothing now but you're actually building product and brand awareness.
Certainly I'd say that effort put into stamping down on this might be better spent trying to convert people to real clients in the future.
The only other thing I can think of is whether there's any legal aspect whereby if you fail to defend your IP you lose rights. I believe that this is the case for trademarks but don't know if it extends. If it did it might mean that you had to put up at least a token fight.
Broadly it seems that the best strategy is just that - some relatively low barriers more as a reminder than anything else and then leave it at that.
(Just to be clear and attempt to curb as many silly replies as possible: Just because it's true doesn't mean that I think it should be. Furthermore, your contrived circumstances wherein you turn the TV on and off at just the right moment to avoid seeing the ads is of no interest to me; besides being basically impossible to do properly, even most people doing other things during the commercials will be exposed to the advertising in some fashion.)
