Instead, what I think there will be a much greater short term market for, is a system that will run the teacher's homework assignment (with variations) against GPT-3, ChatGPT, and similar, and will cache the results. Then, when students submit the homework in their LMS, it will automatically compare the cached results for repeated sentences and paragraphs and flag the submission if it matches the AI results too closely. I expect TurnItIn will do something like this eventually, but what if somebody beats them to the punch?
If I had a million dollars, I'd have it built overnight and then marketed to every college, ASAP. I'd tell every sales agent to have teachers and college executives try TextGPT, panic, and sign immediately. I'd sign a million contracts before TurnItIn knew what hit them. Then, once suddenly and so quickly entrenched, I'd extend it into a TurnItIn competitor.