I think you're very right about piracy - you may get a new customer or you may not. I would've never gone to all the concerts I've been to if it wasn't for pirating websites. Besides, I don't understand (at least with music) what the big deal is anyway - most music is available on YouTube already, each song with more than one video. It's not like I can't take my music from there, you know...
As for movies, most of them are crap. As you say, I would've never gone to most of the movies I watch online, so it's not like they lost me as a customer.

Pirating may be flawed, but that's because the system we live in is flawed also. I think things in the real world should be like on Steemit, only more honest - you view/listen/read and then, if you like it, you pay. Because it's an unfair trade. Normally, in other professions, I would know what I'm paying for, what kind of service I'm getting. But with books or movies or songs, you don't know, so you're supposed to pay beforehand and hope for the best. How's that fair? And how is it the merit of the actors? If I go see something, I either go because I like one of the actors (rare, there are so few good actors around) or because of all the hype created around it (more likely) which is marketing, thus not the actor's merit.
Maybe they shouldn't allow piracy, fine. But they should change the system. Because it's just as wrong as piracy is.