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My understanding is this effectively builds on OpenAI's very expensive initial work, provides a "nearly as good as" model for orders of magnitude cheaper to train and run, that also provides a basis to continue building on and improving without openAI, and without human bottlenecks.
That cuts OAI off at the knees in terms of market viability after billions have been spent. If DS can iterate and match the capabilities of the current in-development OAI models in the next year, it may come down to regulatory capture and government intervention to ensure its viability as a company.