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"out of context", lol
Jesus to be well understood - he was obligated to use something well understandable to surrounding people as a starting point of any his parable.
So this (economic) statement had to be:
  1. well understandable for those people
  2. inline with Jesus point of view
(hint: if you plan to convince other people to your parable - you simply must build it on a thing that you are already convinced to, this is beyond any dispute)