Why the proposed Real Properties Gain Taxes in Malaysia might not curb the rising of house price?

As titled.

The price of the properties in the market are determined by supply and demand.

Depending on whether the demand is more inelastic (due to real need of people to live) or more elastic (due to speculative money)，the price of the properties can go two different way.

One thing for sure, RPGT will reduce the supply of second hand properties into the market (no one will like to sale when RPGT take away a large chunk of profit), making the properties market more illiquid.

An illiquid market will exaggerated any upward price distortion (unless the price raise enough that the property owners gain the same with/without RPGT).