what about credit crunch and banks liquidity crisis which has nothing to do with what you said but is going to happen? You only think within a boundary but never consider worldwide factors.Unlikely. The government will never allow property to crash. There are tax tools such as BSD and ABSD, supply side tools such as GLS and HDB/EC MOP, and financial tools such as LTV to play with.
Banks can recall loans... they underwrite their mortgage T&Cs, no problem turning it into their flavor.