This is a myth. Let’s review the commercial definition:
FAR 2.101 Commercial Product definition Paragraph 1 states:
(1) A product, other than real property, that is of a type customarily used by the general public or by nongovernmental entities for purposes other than governmental purposes, and–
(i) Has been sold, leased, or licensed to the general public; or
(ii) Has been offered for sale, lease, or license to the general public;