Those so called foreign talent, now hundredth of thousands of them, can only become permanent resident (PR) after working and staying here for a year or more.
A PR can only buy a resale flat. They are not allowed to apply for a HDB flat unless they become a Singapore citizen.
So where to get so many resale flats ?? Answer ?? allow Singaporeans to upgrade with no levy maybe can work.
So value of resale units will go up and up.
Singaporeans are more talented, they hold on to their flats and wait for prices to go up further, let the foreign talent wait and wait and finally pay a higher price.