Marketplace assets have long been used to train Epic Games’ own AI. When you publish an asset, there is a checkbox that allows AI training. It would be stupid for such a company not to engage in this area. Why do they need nanites? To make it easier to work with garbage models that were created by AI. They have long been preparing to implement neural networks in the engine. Any user will be able to generate a model, material or sound that they need for a project directly in the engine. You can no longer hope for sales