Definitely, the major change has been Universities monetizing this whole segment of untapped market, whereby they can get 4 paid years of tuition from the average student, where before all these people were bypassing their educational system.

Same deal with bootcamps, just much shorter timelines and larger margins. Its an industry that allows HR and managers to easily make decisions about hiring, even though hiring is like judging wine, some years at some schools produced much better talent than others, and that talent has (hopefully) improved since then... and small unknown vineyards can produce amazing stuff.