I mean, if you let "culture" be defined by corporate media and advertisements, then yeah the culture is stagnant. But at least half of the population (at least in the US) spends a non-insignificant amount of time outside of that and in other cultural spheres. It almost seems like the author is hoping for the same corporate sponsors to feed them a prepackaged "alternative" in the vein of the Coke Pepsi non-choice.