I'll admit that I didn't read the entire thread, but as an artist myself and working in the arts, rights and copyrights are part of my daily job.
The bottom line is (according to the law), piracy IS theft. Theft has nothing to do with physical property, so comparing it to a car is pointless. If Weiand takes an Edelbrock intake and makes a pattern and makes a copy, it's theft. It doesn't matter that the item stolen is the intellectual property represented by a void in some casting sand, it is theft. A few years ago we were sued (it didn't go anywhere - basically evolved into a cease and desist) because we accidentally let our ASCAP/BMI license expire. We played some 60s/70s british music for pre-show, and somehow word got back to Liverpool that our tiny community theater in PA was playing music. We got sued by the Beatles for 30k Euros (about $45k at the time). They had every legal standing. It doesn't matter that their organization makes billions of dollars every year and they were only going to make 35 cents off our ASCAP license.
It's not about getting richer for the big names, it's about plugging leaks in the hull. People like me are in a 12' aluminum boat. People like Paul McCartney are in a 150' yacht. We both have leaks in our boat if we don't keep an eye on our rights infringement. If we don't, both of our boats will sink eventually. It doesn't matter how rich you are, if you sell a product, you deserve to be paid for that product. In the case of software, music, performance art, or another intangible entity, the law is crystal clear. It is a crime. The law was created for this exact purpose. Creators of the intangible products had no protection from piracy, so it's why the law was invented in the first place.
Their product is a song, a line of code, or an inventive idea. Just because it's easy to steal doesn't make it legal. Just because you're not stealing a physical, tangible item doesn't make it moral.
Saying that piracy is not theft is (from a legal perspective) a completely indefensible position. There is zero basis in law that supports piracy. This is why it's called Identity theft and not Identity Piracy. If someone steals your identity, you don't cease to exist, but it's still called theft.
Imagine being me for a moment. I write a song in my moldy basement with a $50 used guitar, a friend hears it and calls their friend who knows Taylor Swift. T Swift records it and makes millions and I'm screwed without that law. Taylor makes money from my idea which could have made me money. That is the very definition of theft.