Millions of people create things all the time with zero compensation. That’s literally why the “starving artist” is a universal stereotype. People create things out of passion and self-expression, for shared experiences, and for the good of others.
The idea that everything must have a profit motive behind it or nobody would do it is a Capitalist myth.
In most cases of large scale production, the vast majority of people involved are already compensated for their labor. Ironically, often it is the artist/group themselves that don’t receive compensation directly for their work, but as a conditional percentage based on overall profitability of the parent label corporation, (who are near universally nasty, scummy, and exploitative.)
Doing labor is not a sufficient condition for compensation. If it were, I could go through parking lots, washing people’s cars while they are inside, and then present them a bill for my labor. Then, if they refused to pay, I could take them to court for “stealing” my labor from me by enjoying a freshly washed car and not paying the bill.
I could create artwork and demand people buy it from me to compensate me for all the labor I put into making it. Both examples are obviously ridiculous, because while labor very well may be a necessary condition for compensation, it isn’t a sufficient condition.
You admit that my concert example, at least in certain circumstances works. Which means that it proves my argument. If consuming content without compensation is actually stealing, then people walking past and listening to some of the music in a concert are literally thieves and should be arrested and forced to pay restitution. A ridiculous conclusion to the vast majority of people, even, I would wager, to many anti-piracy folks.
I advocate compensating artists for their work if you can and if the artist is independent. I think its morally wrong to support the current exploitative entertainment structure by willingly paying for services and products that are designed to abuse the consumer and in many cases, the very artists that are under their banner.
You also ignore the idea that an action can become morally right in and of itself depending of the motive. Piracy itself can be and act of protest to support proper orientation of the markets and social norms around the creation and distribution of art.
History is filled with activists engaging in what was illegal and considered immoral at the time, but we look back on their actions now as good and upright. Just because many pirates are nerds that post dank memes doesn’t delegitimize their actions.
Labor rights activists a century ago read Socialist theory and distributed cartoons and media mocking rich tycoons and abusive bosses. In other words, they were also nerds that posted dank memes.