Arguing getting rich from exploiting arbritrage holes with day trading is quite different from arguing general, long-term market patterns. The market -- and the companies from which it's comprised -- going up is the basis of many things, including retirement funds and the success of this country.
So if I understand you right, you're arguing that every person with a retirement account is just gambling with all their money, and that statistically, they always lose it (as with casinos)? That one can't derive any relevant information from a company's balance sheets or cash flow statements?
Whether the average person likes it or not, finance plays a big role both in this country and the world. Perhaps dismissing the big people and corporations and governments as merely gamblers in the game of life is the easy way to deal with something that's not easy to understand... but that's not a concession I'm willing to make.