First, it's affordable rental, with an offer of a new HDB flat. Accompanying this are the Pap Instructed Press & Media (PIMP) suggesting that it is only fair that like the rest of Singapore, these people should pay rent. Nearly all residents will say, 'ok' as will most of the others. Only the 'lunatic' fringe will kpkb.
Second, the rent goes up, with PIMP citing the principle of going closer to 'market rate.' The offer of HDB flat becomes more attractive. More move. By this time, the population will be about 6 million with many on the main island really feeling the squeeze of masses and the pressure of mad property prices, and thus would not object to these few people paying a few dollars more.
Third, the 'rental' becomes 'market rate' and the pressure to move out will be even greater. Almost 6.5m, and nobody on the main island is complaining. A threat will be issued that the offer of new HDB flats will not last forever. All move out. Ubin becomes playground for the super rich who need to make trips to Malaysia regularly.