The population of elderly will not decline until long after the population of the workforce declines. Will the elderly control the capital? Not necessarily. Under our financial system, the value of an investment is based on future profits, presumed from future increasing scarcity. All those 401K plans, social security trust funds, stock markets, real estate markets... they could all approach zero value.
Here's my advice everyone:
The only sound investments are children who love you.
Perfectly put.