The constant fear is that if you did that, you would then need to be licensed before you can create software, with a formal education structure and possibly limitations on how many software engineers could be educated in a year like with doctors. This would also likely bring down heavy regulatory structures onto the profession, where a programmer could be "disbarred" or have their license revoked if they wrote bad code, or would have to get malpractice insurance in case their code hurt someone or cost companies extra money. There are arguments in favor of a software engineering license, but there are arguments against it as well.
I work in the information security industry and there are constant talks about making a "security license". Some places actually required security engineers be licensed as private detectives. In a career where there is a critical lack of good applicants to fill the immense number of jobs, this is devastating to any efforts to try to fill the open security positions.