I think the biggest factor causing these bootcamps to go out of business was stated in the article: there is no IT worker shortage. The fact that most of the people attending those bootcamps already held Bachelors degrees strongly implies that. If there was a real worker shortage, employers would be hiring people without degrees and have them do the best they can. I think bootcamps arose as a result of an industry-wi…
This is all aside from the difficulty of grading devs to establish different salary levels, of course. I personally don't think my salary is too high ;-)