<prompt> Translate the following text to EnglishKwa hivyo, gharama za utoaji wa kudumu hazitarajiwa kupungua mpaka kiasi cha mtu mmoja kiwe chini sana hivi kwamba chanjo ya chini sana iliruhusu waendeshaji kuruka sehemu za njia zao.  <response>: Thus, fixed delivery costs would not be expected to drop until volume per capita were so low that the resulting very low coverage allowed carriers to skip parts of their routes. 