By Shahar Ziv in Forbes The American dream has “become a disappointment” for many Americans, Bill Ackman recently argued in a New York Times DealBook essay. Ackman, the CEO of Pershing Square Capital Management, noted that an impetus for rising inequality in America is the stagnation of wage growth vis-a-vis the boom in investment returns, which disproportionately favor wealthy Americans. To reduce inequality, Ackman proposes funding an investment account for every newborn in the US that …