Successive govts have used inflationary measures on housing to give people a feeling of economic wellbeing.
All Ponzi schemes are a subset of a bubble. Those seeking to benefit here are the govts who are stoking it.
Well no. A Ponzi scheme is a fraud in which you offer an investment vehicle and you use the payments of later investors to pay the "profits" of the earlier investors instead of actually investing the money.
A bubble is simply a case where the price of some commodity gets unrealistically high. A bubble isn't a fraud in itself although it may offer opportunities for fraud.
The government is not operating the housing market as a Ponzi scheme. For a start, there is a real commodity being traded (houses). Secondly, we don't pay the government for our houses and then sell them back to the government. You could argue that the state pension is a government run Ponzi scheme but not the housing market.