I think your last post is blending two different issues, especially with the picture, at least for the European situation. (I do not know exactly how it is in USA). I mean the first issue : licensing some professions and other not, and second issue : the access of them by money.
According to me, licensing a profession means officially recognize and ratify knowledge learned in an official school. Also a licensed profession can be used in order to protect the profession and the citizens who need the service of the first one, at the same time.
For example : a licensed nurse like Dee Fahey or June Adams is a proof of professionalism and security. If everybody could be called “nurse” without going to nurse course, it could be a problem…
First issue, should electrologist be a licensed profession ? Some certified electrologists are plucker and some non certified electrologists work very well… the issue here would be the access to a good electrology education/course with the same quality for all.
(Let me recall that some official course tell to their students that we can not treat telogen hair…)
Other issue : the financial access. In Spain for example the inscription fees to be a certified esthetician are like 2$ in a public school. So here we can not tell that licensing means “the government sells your rights back to you” as the picture you posted says.
The conclusion: I do not think licensing is a problem, so is the access to good education. In France (it was the first issue of the thread) there is no access to electrology course because of the lack of knowledge about it : an electrologist needs to learn his profession and practice a lot, but you do not need to study 10 years of medecine.