This is a "better watch what you ask for" situation. Accountants and lawyers effectively controlled their customers. You can't use accounting or legal work for

This is a "better watch what you ask for" situation. Accountants and lawyers effectively controlled their customers. You can't use accounting or legal work for business purposes without those things coming from licensed practitioners. And they have no other use than to work with regulatory agencies (loosely speaking such as courts, IRS, etc). If you lock down software development too hard, people will write their own. It's easier to hack something together that solves a specific problem than to write general purpose software that can be sold. And eventually the licensed programmers will break their own rules, for instance by using un-approved computers, languages, and development tools, in order to compete with software smuggled in from overseas.