Financial analysts suggest that for our nation to sustain its economic expansion, a greater level of individual savings is essential. A new legislative initiative proposes that citizens can create savings accounts where the interest accrued would not be taxed until the funds are withdrawn. Proponents of this initiative argue that it would enhance the funds available for banks to lend, with minimal impact on government tax income. However, historical data from similar tax-incentive schemes indicate that nearly all funds invested were merely shifted from existing personal savings, resulting in no net increase in overall personal savings. Based on the passage, which of the following conclusions is most strongly supported?