The disappearing-home-bias view could have a natural stopping point when wealth portfolios are rebalanced. This is all new and unexplored territory. But determining what explanation may be correct and stable may also be somewhat beside the point. However stable the underlying phenomena, it is much more stable for the United States to increase its own national saving and finance its own investment.
Specifically, the year-on-year rate of change in nominal wages per full-time employee has become slightly positive, reflecting increases in overtime pay and winter bonuses. In addition, hourly nominal wages per part-time employee remain on a modest increasing trend year on year.