they are victims of their own success in some sort.
the issue is: they don't need any foreigners making real estate completely unaffordable for locals which are often way less competitive and more entitled (according to my Chinese immigrant friends there).
So seeing real estate going thru the roof while the citizenry cannot afford even a shack is a nightmare for the governance process.
Id say this is coming to every western nation too, so it has implications to real estate investors (which I assume will be made to pay for it).
I never understood really the hdb system that well, but they have (apparently you can get some housing subsidies as citizen), but for some reason they seem as undesirable and a freehold condo is way more of a status symbol whereas an hdb flat is not.