To increase prosperity in a community, state or nation, you need to grow the economy faster than the population. Economy = GDP activity from outside the assumed jurisdiction (community, state, nation). Service sectors grow based on economic growth. You grow your nation's economy buy selling goods and services to people and companies that are outside of your country. Aging countries (most are) need to import workers to keep growing their economies. The key to it all is increasing income from the outside: exporting products, providing services outside your borders, tourist dollars, etc.This is the thing, western economy based on demographic growth and expansion once your demographics enter decline you need either young immigrants to make up for that shortfall and aging population.
The other solution is have more kids but thats a long term solution that will take an entire generation before it is felt. thats why countries like the Germany are taking on immigrants, the other solution is Japan is intending to build several million robots and automate there industries. Once population stops growing housing prices will of course fall, but then your in a recession. It also partly a cultural thing as Australians dream is to own your own home where as in places like Germany its more about saving enough for retirement and local government controls property market to keep rents low.
Dont worry the housing bubble is going to burst again, its just overheated.