Slowly but surely, I think govt will start reducing the percentage of public housing to catered only to those in the need (ie, lower-middle income and below).
This will free up more capital for other expenditures.
That's why i think the DBSS will become like HUDC as the next step. Govt. wants to relinquish their role in using taxpayers money to maintance housing developments. So DBSS might have the option to be privatised and ebloc.
Then the next step will be the HDB flats. The current way they are recycling capital is thru SERS of Prime HDB location. They sell the SERS land to developers and relocate the SERs owners to more ulu or cost-effective location. You can see 12 storeys of avg 1000sqft can become 25-35 storeys of avg size 800sqft. around 3 or 4 old development land size to exchange for 1 plot of new development land size. Those old flat in ulu location .. most govt have no choice but to do selective upgrading to keep them up till a date when they can ebloc them cost-effectively. And the way to do it now is .. you can see.. They are introducing 60yrs LH. So next time.. your 40yr old HDB .they will SERS and move you to a new 60yr LH.
So, in a way, if you are holding a 99LH condo, it is still safe. We are obviously going towards HK model. But 999/FH are obviously the GOLD Mine.