First of all, literacy rates were about 70% in 1710, so the average commoner could absolutely read (at least among men, but copyright law isn't to blame for patriarchy). This is about 300 years after the printing press, literacy had gone up.

Second...I just don't know what to say to this anymore. You've created a strawman artist who believes their work is entirely original, even though no artist would claim they had no influences. You're pretending that copyright is an edict that says ideas can never be shared, as though the Public Domain, Creative Commons, and fair use didn't exist, or Substantial Similarity didn't have to be proved (which, by the way, is the reason that Hobbes isn't infringing on Tigger). And worst of all, you're acting like artists who want to be paid for their art are greedy capitalists, not artists that live under capitalism. How is an artist who wants make a living by creating art all day, every day, somehow less worthy than an artist who works 9 to 5 at a crappy job and then does art when they have free time?

You seem to think abolishing copyright will lead to some sort of artists' uptopia, but it's pretty much the opposite. Let's say copyright disappeared tomorrow. First, anyone making a living on Patreon will basically be done. If their videos or podcasts are now public property, there's nothing to stop anyone from uploading their Premium Content to YouTube within minutes of publishing, so no one's going to subscribe. Some of them will keep producing things, but since they'll need a new source of income, they'll definitely produce less.

Then there's the cooperations. They'll gobble up everything they can. Sure, you'll be able to make your own Spider-Man comics, but if any publisher likes them, they'll just sell them, along with any original IP you have. Of course you'll be able to sell them too, but since they can afford more advertising, higher quality printing, and merchandising, they'll out-sell you easily. You'll be lucky it anyone's even seen or heard of your version, even though you're the author. It'd be like trying to compete with Coca-Cola by opening a lemonade stand, and Coke is allowed to use your lemonade recipe.

I'm not saying copyright is being done well now; cooperations have an outsized ability to enforce copyright claims, they've manipulated the law to retain IP for an insane amount of time, and they have far more power in negotiations over licensing and rights than artists do. But your solution to that is, "What if artists had no rights? That would be better!" and I've just...I've run out of ways to react to that. It's truly insane to me.