A home-made meal prepared by a skilled cook and with well chosen ingredients is guaranteed to be superior even to the output of restaurants, let alone to something produced on an industrial scale.

Not even that skilled. Commercial cooking, including restaurant cooking, is the industry of turning mediocre (at best) ingredients into something people will pay a premium for. Have you ever seen a commercial cook's eyes light up at the prospect of having actually good ingredients to cook with? I'm thinking of an old girlfriend: "I will make you the best meal ever. Buy this list of fairly basic ingredients."