The main reason for the advance of bureaucratic organisation has been purely technical superiority over any other form of organisation.

As Weber maintains:
The fully developed bureaucratic mechanism compares with other organisations exactly as does the machine with the non-mechanical modes of production. Precision, speed, unambiguity, knowledge of the files, continuity, discretion, unity, strict subordination, reduction of friction and of material and personal costs-these are raised to the optimum point in the strictly bureaucratic administration, and especially in its monocratic form .... Its specific nature develops more perfectly, the more the bureaucracy is 'dehumanised', the more completely it succeeds in eliminating from official business, loves, hatred and all purely personal, irrational, and emotional elements which escape calculation.