I think one of the first things we need to look at is the poor quality of a lot of new housing developments and the number of unoccupied / 'brown-field' that could be renovated and provide much more affordable housing than the over inflated prices of new properties. I still fail to see why the ideology of a more unrestricted free market economy would be of any benefit to the property market. In fact I think fewer restrictions would worsen the situation with many buying new houses that could become effectively worthless where for example they have been built in high flood risk areas.

I agree the economy should be less reliant on the housing bubble, but I'm not convinced that technology / start-ups are the only way to achieve this. The 'start-up' hubs you mention are just as likely to become another black-hole which the government throws money at with no real strategy in place.