Invent a conlang, and then communicate only in that.

Franchise your work, so the universe has multiple authors. Let your audience also be creators.

Encrypt stuff and send out license keys. More friction, more adversarial cost.

Use a non-English Unicode programming language, where content (data) is in a binary.

Mess with formats. A static image is slightly tweaked and served base64-encoded. A video just shows the same thing for hours.

Distribute works on floppy disks, or only offer to fax the https:// link.

Create something that is an amalgamation of various Library of Babel artifacts, so the collage is merely a novel derivative.