I think people are making a big fuss over nothing. With careful planning and active cooperation, if necessary enforced with a suitable fine, all of which is perfectly within gahmen's capability, we can easily manage even 10m. Some suggestions for gahmen to consider. Many of these are already in place in other places
1. Apartments to be shared between two families - after all, they are empty and unused most of the time when one bunch is away at school and work. If necessary, school and work can be staggered to accommodate this.
2. Based on IC numbers, designated time to allot to visit NTUC, banks, clinics etc. So if your number end with 4, you only visit Thursday.
3. Hourglass given with meals in all hawker centers, food courts. If you run out of sand, pay $$$. Done in some Paris cafes already.
4. No private cars, only car pooling. This will cut down car population by 80% as most cars are parked 90% of time. Some European cities enforce this already
5. Communal kitchens, washing machines and child/elderly care at void deck of every block, this can reduce maids by 90% already - so even more 'quality' people can be allowed in to compensate. Bonus is that homes need not have kitchens or space for washing. Can easily double or triple no. of units in one block without affecting lifestyle (ok, only moderately). Again this is done already in many Soviet regimes.
I am sure we can come up with more ideas...
