I disagree.Unless the show's challenge was directly to see what you can get for free none of the reality TV shows encourage lying as a mode of operations.
TAR has had people down to their last piece of clothing in the past and I don't remember anyone needing to lie to make it further in the race.
Survivor has had members lie to fellow competitors, but again I don't remember them scamming anyone outside the competition.
What multi-episode RTS has asked it's players to actively to non-players?