Even if copyright wasn't a thing some creators do not want their work to be copied.
>And my kitchen knives by default make it way too easy to violate homicide law
If kitchen knives were made impossible to use for homicide, but could be made for the same exact price in the same amount of time and were just as effective at everything else there would be no reason for people to sell homicide capable knives.
If content were made impossible to pirate, but could be made for the same exact price in the same amount of time and were just as effective at everything else there would be no reason for people to sell piracy capable content.
But, homicide-incapable knives and piracy-incapable content aren't real. They're a fantasy, which does not exist.
All DRM does is make it harder for legitimate users to access content they have paid for.
We cannot create homicide-resistant knives because it is indistinguishable from lawful slaughter and butchering knives. Similarly, computers have a powerful native feature - the ability to infinitely copy digital content until you run out of storage or electricity. This can be used for legal and nonlegal purposes, but neutering it's capabilities is unthinkable.
Copy protection tries to put the genie back in the bottle, and then blames the community when things go wrong. It's a circular process that resists advancement and protects exploitative parties.
Can't wait for kitchen knives that immediately self-destruct if you use them on items that didn't come from the knife manufacturer's grocery store.