Unless you have people's biometric data, you won't be able to separate agents from people. Except by payment.

Agents will be able to pay orders of magnitude more than humans, since they can just cache the documents at openai or anthropic, then use them over and over.

But then the cost to access a HTML page will also have to be thousands of dollars, since it can only be sold five times. (Once to Anthropic, once to OpenAI, once to Google, once to Meta and once to Apple).