Content cannot be protected, in the future even less so. The answer? Build a community around your content. A functioning community is much harder to copy-paste, giving you enough security to build a business, around your content.
The cost of subscription would have to be low (2 euros), which means that the amount of subscribers would have to be high (2000), which means that the amount of work that would go to moderation would be so high that working as a “onemanband” would not be possible anymore.