THIS. So very much this. Especially in the quantities required for industrial production (which is what you'd see in chain restaurants, and probably most others unless they're specifically sourcing artisinal ingredients), you're just not going to see high-quality apples. They've been hybridized and whatnot to survive transportation to the processing facility without spoilage. Consumer-grade ones also have to look nice on arrival and have maximum shelf life. Flavor is a far lower priority.