 Following this trend, nanomaterials are emerging from carrying premium profit margins for market participants to a status of commodification.There is a spectrum of commoditization, rather than a binary distinction of "commodity versus differentiable product".Few products have complete undifferentiability and hence fungibility; even electricity can be differentiated in the market based on its method of generation (e.g., fossil fuel, wind, solar), in markets where energy choice lets a buyer opt (and pay more) for renewable methods if desired.