Its even less complex than this: its more expensive than its meat or vegetable equivalent, so you're either eating meat or you're eating vegetables and there's

Its even less complex than this: its more expensive than its meat or vegetable equivalent, so you're either eating meat or you're eating vegetables and there's no point to sub in plant-based meat. If you're doing it for cost reasons you'll eat cheaper meat or vegetarian, or if you're doing it ideologically you're eating vegetarian.