Hmm, maybe we should ban selling housing for more than the purchase price + inflation based on some index. If rent controls are popular, why not also have price controls on properties themselves. Maybe allow some increase if entire building is replaced, but some value must be attributed to land that can not increase in value.
What if the government guaranteed income as risk management on this form of investment and made the housing bond a gilt, at marginal cost rather than absorbing the full cost of social housing?
I mean I still prefer public housing but if we're on a mixed economy road, don't have a national pension model that works and people do market investment in property trusts for income class reliable returns...