For most existing industry's, 1 new tech job costs more than 1 non tech job. Because the tech job costs more so it need to replace more than 1 job or there is no reason to change.
PS: That's not to say increased efficiency is bad, but it requires someone to spend that new wealth on something before a new job shows up. I have personally destroyed over 100 jobs and while in theory they are going to pop up at some other place in the economy they can just as easily pop up on the other side of the world.
PS: That's not to say increased efficiency is bad, but it requires someone to spend that new wealth on something before a new job shows up. I have personally destroyed over 100 jobs and while in theory they are going to pop up at some other place in the economy they can just as easily pop up on the other side of the world.