> If people can't make money without the government enforcing artificial scarcity of their output, they can always chose another business model.

Okay, but this literally goes for every single good ever. Case in point: theft. If theft wasn't "arbitrarily" made illegal, then there exists no business models for anything, ever. Because you could just steal it for free.

The idea behind IP is that IP is a good but an ephemeral one, one without a physical manifestation. So, we need to translate a type of theft that works for that.

Or, we could not. But keep in mind IP doesn't just mean music. It means, like... everything that isn't physical. Including my job, and probably your job too.