The sad thing (for artists) is that it seems like most Spotify listeners don't care.
Most of our music consumption today seems to be as a kind of background vibe rather than an appreciation of the music itself.
We're pretty far away from any actual "free market" here.
The government protects intellectual property rights and they protect physical property rights. In a completely free market, you'd have to own an army to protect your company building. The people with the biggest army would own everything.
Intellectual property laws are in the constitution and are structured to allow the government to preemptively act on potential violations. For example seizing shipments that would violate patents or trademarks before any actual sale occurs. They can also create registration offices to certify claims publicly for the holders.
At the same time you were, and often still are, expected to physically protect your own property and the government largely can not preemptively act on potential issues. You must be a victim to receive service. To a large extent most property dispute /resolutions/ are handled through the civil courts. A criminal prosecution for theft may or may not be perused by a district attourney or certified by a grand jury, and even if it is, it does not make your injury whole.
You would still need a civil judgement to reclaim your property or it's claimed and adjudicated value. Once you have this judgement you are again personally responsible for enforcing it. You can file paperwork with the sheriff to audit their property and sell it or garnish their wages but you take all responsibility for this. Including finding their property or identifying their employer. None of this will happen on it's own simply because you were a victim of an actual property crime.