Because there won't be a 5x increase in the amount of work to do. When companies are given a choice between doing the same amount of work with 5x fewer employee

Because there won't be a 5x increase in the amount of work to do. When companies are given a choice between doing the same amount of work with 5x fewer employees vs doing 5x the amount of work with the same number of employees, they will almost always go with the less risky path (doing what they have always done before just with less).