Rental = Business
Business = Investment
任何的Investment都有Risk。Risk帶來的是loss。當你的investment碰到loss的時候,你就要從business的角度看你是否應該/worth take more risk to recover your loss。你花的時間是unrecoverable,你花的legal fee也未必可以recover。這些都是你的additional risk。You can take more risk to recover your loss or take no more risk by accept the loss。