> Too many people go to universities for a degree without checking if there is demand for these degree.

I agree for certain fields such as your example but until recently software engineers were in disproportional demand and that has changed pretty dramatically in less time than one would need to get a degree in the field.

Edit: And the example of people working in construction: I know a few. Their companies are booked out for the next 2 years. They, however have shitty pay and disproportionately many work-caused health problems. The owners of those companies are having a good time though.