This is one of the worst straw man arguments I've seen in a while. Ecommerce and marketing are not one in the same, quite the contrary. And yes, maybe the DJIA and S&P are sitting pretty high, but those represent less than .1% of public stocks, and are hand picked as some of the most prolific stocks. While they may historically have been a good representation of the overall health of the stock market, at this point they're pretty far removed from reality.
Market Data 
Markets 
