The stock market does not have a life of its own. In a relatively free economy, success or failure of investment in stocks depends ultimately on the same factors that determine success or failure of any business.
Government statistics on worker productivity combine many errors of aggregation such as "average prices" and the total purchasing power of money. So it's unlikely that productivity numbers tell us much that's useful.
It is not money that funds economic activity, but the saved pool of consumer goods. The existence of money only facilitates the flow of savings. Any attempt to replace savings with money ends in economic disaster.
The so-called Founding Fathers used small-scale tax rebellions to justify their counter-revolution against the spirit of 1776, thus launching the big-tax, big-government Constitutional Convention of 1787.