My understanding is that the cost of training each next model is very very large, and a half trained model is worthless.
Thus when it is realised that this investment cannot produce the necessary returns, there will simply be no next model. People will continue using the old models, but they will become more and more out of date, and less and less useful, until they are not much more than historical artifacts.
My point is that the threshold for continuing this process (new models) is very big (getting bigger each time?), so the 'pop' will be a step function to zero.
Thus when it is realised that this investment cannot produce the necessary returns, there will simply be no next model. People will continue using the old models, but they will become more and more out of date, and less and less useful, until they are not much more than historical artifacts.
My point is that the threshold for continuing this process (new models) is very big (getting bigger each time?), so the 'pop' will be a step function to zero.