Just like anyone can produce a copy of Shakespeare or Mozart without any problems. Ok, it happens all the time with works that are not under copyright restrictions.
You are specifically talking about new production and an author getting paid, but in the same kind of environment. Well, let’s look at what happens now.
No one pays Linus Torvalds for their copy of Linux. Linus doesn’t ask for money, yet he does get paid. A consortium of companies who benefit from his work was formed, which hired him to continue doing what he was already doing.
So that is one way authors can get paid.
There’s also the serial production method I previously mentioned, that Dickens used. He utilized time preference and his unrivaled “time to market” with his own stories to make money. An author could set up just such a subscription service, where anyone who pays him will get on a preferred mailing list to get the story sent directly to them before anyone else.
Sure, someone could “cheat” and have someone on the list forward them a copy, and get it some time later, but for a truly popular author or musician that time preference could be sufficient to keep them employed doing what people love them to do.
Sponsorship also exists. “The Rich” have sponsored artists, authors, sculptors and the rest throughout history, and I see no reason for that not to continue.
Lastly, examine your own motivations. If you liked an author, say Carl Bussjaeger, and someone offered for nothing a copy of his book Net Assets that you knew he was charging $5 for, would you take it rather than pay for it? (not a rhetorical question, real person real book. Great book, BTW, which I gladly paid for. See Bussjaeger.org where the book is now offered for free.)
There are many, many people like me, and you, who can and do afford those kinds of things right now. Today.
Imagining a world without the crushing overhead of government, where the full wealth I produce is available for me to spend, and directly paying an author who has produced a work that I enjoy, or subscribing to a consortium such as the Open Source Development Labs, is even more likely.
Not less.