Besides that fact this matter has got nothing to do with stealing
The way I see it it is stealing. Sneaking into a movie or a concert does not deprive the theatre or promoter of any physical property either but it still rather blatantly dishonest and is an obvious attempt to get something for free that one would normally have to pay for.
I think of royalties and IP as more or less giving people credit for coming up with good ideas. Do those that are all "well information is just free" ever actually HAVE any information of their own? I don't tend to meet too many people that actually create things that support the idea of everyone being able to just grab it for free. It seems more like freeloaders who contribute jack **** and want a free ride are more the types that defend piracy and are againt IP. That doesn't apply to everyone but it seems to be pretty damn common.
The concept of one receiving some form of credit to one's ideas is nothing new. Copyrights and patents weren't designed recently by a bunch of evil corporations. And yet it seems like a very recent ideology that these concepts shouldn't exist. In other words it seems right around the time that it became incredibly easy to pirate IP that the concept of how IP should not exist became more widespread. Once the ability to steal became effortless the thieves needed some bullshit to justify their actions. Suddenly everyone finds out if they don't steal because it's wrong or because they don't want to get caught. I don't see it as any different then how all sorts of people become huge jerks on the internet (I don't mean anyone on this forum; I'm talking YouTube comment sections stuff). Some people are nice and polite because they're good people and some people are only because they don't want to get punched in the face. Once the threat of punishment is removed we find out who the gentlemen and the assholes really are.
I notice that there does not seem to be such an outrage over patents. There is for software patents (which I think often abuse the system) but no one is on the internet making a big stink about people inventing an innovative new wrench and getting exclusive rights to it. I think we don't see it because it doesn't affect the pirates. There is no easy way to rip-off patents and it does not concern them. But they enjoy ripping off movies, music and videogames so they've got an opinion about that.
The whole concept of copyright pretty much has to exist for us to have the vast amount of art and entertainment available to us. I write songs and make films. I have not made any money on either. I'm limited by budget and time. I can't afford to make something without major restrictions and I can't dedicate as much effort as I would like because I have to have a full time job to, you know, prevent myself from starving to death. The financial incentive of copyright allows for this stuff to get made. If you can make a living doing it then you can dedicate a full budget and schedule to it. Therefore we have a model that rewards creativity and provides incentive for people to create such works. Yes this can be abused and sometimes great work goes unnoticed while complete junk is successful. But the alternative is that arts and entertainment become a gentlemen's pursuit that only the rich can fully pursue. You want all these books and movies and songs and videogames to be made? Well then you have to support the right for their creators to receive credit for such works and have the rights to sell them.
Though I do think that comparing this stuff to stealing a car is extreme. There is a clear loss of resources in that example. Piracy is merely a loss of hypothetical revenue which is not as serious. With outright theft, each incident causes harm. Piracy's harm is proportionate to how widespread it is. One person, who wasn't really a potential customer to begin with, has virtually no effect. But if it is more widespread you get something like China where it more or less impossible to sell IP at all.
I think the whole concept has been somewhat abused and bullshitted around by some big corporations. Some people who have been caught have really had the book thrown at them while more severe criminals receive lesser punishments. Some of the methods to combat piracy piss all over our rights and as much as I support the idea of copyright I do not support at all this new concept of buying the "licence" to use something. Like with most things in life there are bad guys on both sides. It isn't consumer rights vs. copyrights. It doesn't have to be a battle and it shouldn't be. The two concepts can and should co-exist and it only greed on both sides that prevents that.