It seems as if high housing prices are an explicit policy of most major powers at this time.
No, not really.
https://www.statista.com/statistics/240991/average-sales-pri...
> Didn't various governments put vast amounts of money into the economy in an effort to ensure house prices returned to their previous levels and continued to rise?
No.
They put lots of money into the economy as Keynesian economic expansion policy, to combat unemployment.
House prices simply weren’t as dramatically effected as you seem to think. Check the statistics on the previous link if you don’t believe me.
That's true in the US and UK.
I'd contend that preventing massive asset depreciation, including housing, was an explicit policy of every major economic power in North America, Europe and China. I don't know, but suspect other major economic powers also participated in that, but I'm not as well versed.
(I should point out that in the 1950s it was just as large a multiplier of household income, but in that time we went from one wagerearner to two.)