We did not buy houses 'cheaply' House prices were lower in real values because so much of our mortgage payments were taken up paying the very high interest rates current when we were house buying.
Put mortgage interest rates up to 10-12%, limit loans to 3 x the main income plus 3 x half the second income and watch how house prices would plummet, but houses would be no less difficult to buy, what decides house prices is the monthly payment lenders decide people can afford and what multiples of income they will give. Interest rates up and prices stagnate or fall, interest rates fall and prices sky rocket.
Demand and supply does come into it, but is nowhere as important as is generally thought. Similalry in the past a third of the population had secure tenancies in council housing, so, generally, were not interested in buying a property. Many were psuhed into buying their homes for unrealistically low prices by the Thatcher government so that now their children expect/are forced into owning their own houses because the council house tenancies that should have been available for them are no longer there.
It is easy to say casually I understand people feeling threatened at the idea of their house losing value if that notional wealth is their security. but for many people that means that they are in negative equity, owing more to the mortgage lender than their house is now worth and unable to downsize, because if they sell their current property they will be left homeless, unable to afford a smaller property and with a whopping unsecured debt owing to their lender.
This has happened several times in the past. In the late 1980s/early 1990s and during the financial crisis in 2008.
There are far to many facile critiques of housing and its provision by people with short memories or lack of understanding of the housing market as a whole.