A really good article and exploration of risks/concerns. As you allude to, the ability for AI to detect work generated by AI will be fundamental in retaining the human value of content on the internet. Organisations such as Google, Amazon, IBM etc. will likely create engines "contra" these types of content generators, they can have the ultimate market position of supplying the demand and creating the "police" mechanism for generated content identification. Perhaps we might see states act on this given the value of internet transactions around content generation?