In a nutshell, older generations who bought homes and other assets at low prices decades ago have benefited enormously as credit-asset bubbles have pushed the value of these assets to the moon. These generations are wealthy not from any boost in national productivity–they're wealthy simply because they happened to buy assets in the early stages of a multi-generational bubble.

Younger generations are experiencing a double-whammy: they're priced out of homes and other assets and they're being crushed by the stagflation that comes with credit-asset bubbles: now that the deflationary impact of globalization has faded, the super-low interest rates of ZIRP (zero interest rate policy) and vast expansions of credit and currency have finally generated embedded inflation and suppressed the only real engine of stable prosperity, increasing productivity.