This paper presents a general rent-seeking model in which participants
decide on entry before choosing their levels of efforts. The conventional
wisdom in the rent-seeking literature suggests that the rent dissipation
increases with the number of potential participants and with their
productivity of effort. In this paper, we show that this result of the
rent-seeking literature is far from general and applies only when
participants are relatively weak and enter the game with certainty. In the
presence of strong competitors, the expected total dissipation actually
decreases, since participation in the game is less frequent. We further
consider the impact of competitors' exit option, distinguishing between
\textquotedblright redistributive rent-seeking\textquotedblright\ and
\textquotedblright productive rent-seeking\textquotedblright\ situations. In
redistributive rent-seeking, no social loss results from the fact that all
competitors exit the race. In productive rent-seeking, instead, lack of
participation creates a social loss (the \textquotedblright lost
treasure\textquotedblright\ effect), since valuable rents are left
unexploited. We show that the lost-treasure effect perfectly counterbalances
the reduction in rent dissipation due to competitors' exit. Hence, unlike
redistributive rent-seeking, in productive rent-seeking the total social
loss remains equal to the entire rent even when parties grow stronger or the
number of players increases