Shoddy or delayed construction, plumbing, or electricity is a massive drain on the economy of a country. If there is a massive shortage of workers willing to even do the work and a lack of people with a couple brain cells to rub together entering the field due to your ridiculous mindset, the innovation and everything you rely on is not possible. Also, the trades wouldn't be paying such outsized wages if there wasn't such a need for them. Your argument makes the assumption you can remove the middle levels of the scaffolding and add to the top to help a country move forward.