I still think it's important to conceptually differentiate piracy from theft. They are different issues, and there are different solutions to them.
Saying that piracy is theft is implying that the ways you fight theft can also be used to fight piracy, which is wrong. I think if people are serious about fighting piracy, and protecting the rights of content owners and creators, they will stop thinking of it as an analogy to theft as that analogy is not helpful to dealing with the problem. Locks, security cameras, safes, etc do not address piracy.
The problem is illegal or unauthorized copying. The alternative is legal or authorized copying (either through purchase or subscription or whatever). The two are opposite options that coexist in the broader market. This is the right framework to begin attacking the problem, I think. How do you draw market participants away from the bad option and incentivize them to select the good option?