I agree with the sentiment that doing well today requires a level of vigilance and a careful eye on the employment market. The specific job function you mention

I agree with the sentiment that doing well today requires a level of vigilance and a careful eye on the employment market. The specific job function you mention is an example where the bulk of the employment market was created, promising, and then turned into a low-paying glut in a 10-20 year time frame. But hey, if you pay attention you can see these things coming, so it's okay right? Maybe, but it is worth remembering that the old unionized economy provided people with greater career stability. I wouldn't personally want to do the same thing for my whole career, but having been in the workforce I've seen lots of relatively capable web dev's and the like who are going to be up shit creek the next time a shift comes. It is sad to say, but constant effort toward re-invention and education is a rarity in our society. I think as a society we need to figure out how much of this is reasonable to expect from the average person and accordingly make sure that kids learn of this expectation from a young age. I think it is fairly obvious that having to learn a whole new field every year is too much, but where is the line?