Dejansko zajemajo veliko število dejavnosti, kot so splošne javne storitve, nacionalna obramba, zunanje zadeve, pravosodje in policija, urbano načrtovanje in okolje, ekonomska politika itd. Ker se te storitve trošijo kolektivno, posredno in nepretrgano, obsega njihove proizvodnje ni mogoče meriti z obsegom njihove uporabe.
In fact, they cover a vast range of activities such as general public services, national defence, foreign affairs, justice and the police, town planning and the environment, economic policy, etc.Since these services are consumed collectively, indirectly and continuously, the volume of their output cannot be measured by the extent to which they are utilised.