1. Create AI capable of writing almost human-level text and make it generally available.
2. Make said AI generate text in a way that makes it possible to detect that it was written by a machine.
3. Create another AI that detects text written by above AI
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4. Put your detector service behind a paywall
5. Every time a competitor appears for your generator, change its steganography so that only your detector correctly classifies it
6. Profit