RVs getting around affordable housing

Unable to afford to buy a home close to their jobs, people in the Washington DC area are now sinking money into a RV and paying monthly rent on space in a RV park.

If that's not depressing enough, there is a recent report that homebuyer's investment for the future could be less an investment than they thought. It shows how escalating real estate prices have spawned appraisal and re-financing fraud, putting homeowners at risk. Is this a bubble, or are all the real estate service companies collaborating (even indirectly) to make money off of hopeful home owners?