This is something Mr. Beast has mentioned a few times when talking about the food products he's been trying out. People say they want healthy food, but in reality people buy what tastes good to them, nutrition be damned.

He's decided he can market well enough that it's worth it to sell his own product, but he can't compete with the economy of scale that the major brands have, so his plan is to compete by making something a little more expensive, but hopefully better tasting and not quite as unhealthy. We'll see how that strategy works out for him.