The problem is, eventually there will be a correction, there has to be, as every bubble will pop sooner or later. And then, a lot of people will be left holding really fucking large bags, like the Detroit housing market post-2008 where people were completely underwater with their mortgages, and communities/society at large would be left with the fallout of urban blight.

Meanwhile, those profiting from the bubble all the time have long since cashed out.