So these articles has got me thinking whether Australia is heading towards recession
http://www.msn.com/en-au/money/markets/australia-is-running-…
https://www.theaustralian.com.au/nation/coronavirus-australi…
It would be interesting to see the opinion of OzBargain economists
Economists call this "lack of general equilibrium thinking". If noone can afford the rent in capital cities noone will rent there - which automatically brings prices down to where people can afford to rent. It's like the Woody Allen joke about the restaurant that "noone goes there because it's too crowded".
Land prices are set by demand for it (as supply is fixed) - that is, the number of new households beng formed. Building costs by wages and materials. Investment returns make little difference in the long run because they adjust to these, not the reverse.