first of all, i suspect that jamie is an hpcer spreading his message like 'dad's army's fraser and his catchprhase of 'we're doomed'...
most people on mumsnet don't have a treatise on imminent hpc's up their sleeve as they're too busy putting up their feet after persuading the kids that it really is bedtime, even though it's still sunny outside... plus, kids give you a sense of a real tomorrow that will be made to work.
so, jamie, if you do belong to hpc site, explain how the 'crash' that the followers have been espousing for the past 15 years has worked out for you? still in rented accommodation, waiting for the sthtf?
if there IS a crash on the way, whether or not you own outright, have a mortgage or rent, we'd all be, to use a terrible political catchphrase, 'in it together'. and will all feel the affects... unless you have a helicpoter to take you to neccker island, you WILL be caught up in the ensuing mess. but, most people who have paid off at least a third of their mortgage at least have a signifiant buffer to see house prices drop by a third before paniching and, even a first time buyer (if there is such a thing in the south east) who bought in london from 2010 - 2013 in london has done just as well.
your pov sounds very much like theirs: bought into the 'end of days' of capitalism and banking an age ago... those that gave up waiting to make a killing among the ruins of a crashed market and bought a house anyway have left, leaving a core of people who desparately need the crash to justify their stance whereas everyone else just got on with living and families..
even now, most hpcers are just hoping for a crash so they can finally buy into the housing market at a discount (or a price they can actually afford).
so, jamie, what's it like in your 'enders' bunker?
(obviously, if i've impuned you, then apologies but you really do look like the stranger in town as, admittedly, do i. apologies to the site, too, for a slight hijacking of the subject.)