Further I’d have to say, that’s actually MORE ethical than blocking ads.
Pirating via bit torrent or any indirect source. Hulu, youtube, or whatever spends $0 delivering the movie to you. Technically they spent nothing on you and their only loss is the hypothetical what you might have spent if you found it worth it.
On the other hand, adblocking… actually does cost them. They are hosting, so they are paying for the bandwidth to deliver the stream to you.
For an analogy I suppose, bittorrenting is a bit like copying recipes to cook for yourself or family and friends at home. Technically it’s illegal but it doesn’t cost them anything.
Alternatively… blocking the ads is a bit like walking into a restraunt, grabbing free bread, then dashing.
Simply put, think more like celphones and e-mail, and less like facebook. You can register an e-mail with google, yahoo, your ISP, your school, your job, or all of the above at the same time, and no matter which one you are using, you can still send a message to your mother for some god forsaken reason is still using an AOL e-mail address. If your e-mail provider is a jerk, throws too many ads, tracks you too much or simply hasn’t added the features you want. you can just switch providers, and YOU can switch providers alone… and still e-mail all your old friends without having to beg them to change as well.