Taiwan's colonists achieved with incentives what Korea needed coercion for [causal]

    Taiwan's colonists achieved with incentives what Korea needed coercion for [causal]
  

For this reason, as Cumings reports the colonial administrators saying at the time, what could be achieved with incentives in Taiwan required coercion in Korea.

QUESTION: What structural or cultural differences between Taiwan and Korea made incentives viable in one and not the other? Worth investigating the colonial context behind this asymmetry.
Diego Gambetta, Trust - Making and Breaking…, loc. 1631