The central issue is high cost of training the models, it seems:

> "Once it has finally released, it usually remains stagnant in terms of having its knowledge updated. This creates an AI knowledge gap. A period between the present and AI’s training cutoff... The cutoff means that models are strictly limited in knowledge up to a certain point. For instance, Anthropic’s latest models have a cutoff of April 2024, and OpenAI’s latest models have cutoffs of late 2023."

Hasn't DeepSeek's novel training methodology changed all that? If the energy and financial cost for training a model really has drastically dropped, then frequent retraining including new data should become the norm.