Earlier quoted context omitted.
Which other "Anglosphere" countries promote home ownership the same way that the US does with e.g. mortgage interest deductions? There are many pairs of otherwise culturally similar countries with differing policies on this (e.g. US & Canada, Belgium & the Netherlands).
Could you explain what you mean by mortgage interest deductions? Does it mean that mortgage interest can be deducted from taxable income? Even if that income is unrelated to the property? In the UK landlords are allowed to deduct mortgage interest from taxable rental income, but this is currently being phased out. (A good thing in my opinion)
There is a mortgage cap of around a million dollars where the deduction ends, which is only relevant in a small number of real estate markets like California, Seattle, New York, and so on.