What makes the cheese in the links I provided below not "real cheese"? None are >$15/lb, at least around me. Note, I agree, they're not fancy cheeses, they're

What makes the cheese in the links I provided below not "real cheese"? None are >$15/lb, at least around me. Note, I agree, they're not fancy cheeses, they're quite basic, plain, and common varieties. But how are they not real cheeses?