It does not really matter what the assets or number representing the assets are. The problem that countries with decreasing proportions of young and working to old and non working populations are that automation is not close to changing bedpans yet, so there is decreasing supply of units of labor and increasing demand.

This was mitigated for a few decades with the import of foreign labor and automation, but presumably this is no longer happening at a sufficiently rapid rate to be able to prevent labor prices from rising. Also, who really wants to change bedpans?

So the political question is: Who in society is entitled to the decreasing amount of labor and how will it be divvied up?