ACCA考试科目 P3 Forward & backwards integration?

I don’t think that forward/backward integration would have to cause this, but I suppose it might if you make certain assumptions. It’s original operations should be no less busy (so same efficiency). However, if you take over a supplier you also take over all its fixed costs. If the supplier was large and you only sold its output internally, output might have to fall and this could reduce economies of scale. However, that’s a rather contrived argument.