He didn't say that being an entrepreneur is a new thing. He made a reference to this: http://en.wikipedia.org/wiki/Petite_bourgeoisie ("Petite bourgeoisie ... is a French term (sometimes derogatory) referring to a social class comprising semi-autonomous peasantry and small-scale merchants whose politico-economic ideological stance is determined by reflecting that of a haute (high) bourgeoisie, with which the petite bourgeoisie seeks to identify itself, and whose bourgeois morality it strives to imitate.")

Ultimately, I think business, whether you're talking about small ones or big ones, socially responsible ones or irresponsible ones, are neither the problem nor the solution. In a market economy, the health of the middle class is function of the supply versus the demand for labor.

Being a well-intentioned entrepreneur isn't going to have any impact on the equilibrium. The minute you become big enough to have a non-zero impact, you'll be big enough to feel the heat of competition from China, India, etc, and will be forced to adopt whatever labor-saving measures they adopt.