Economic progress in a free market involves technological progress, the accumulation of capital, and the increased productivity of labor thanks to the two previous elements. That's not something to fear. There is no limit to human ingenuity. Labor is not a fixed pie that technology and capital shrink over time. And yes some labor-intensive activities have been and will continue to be replaced by capital-intensive systems -- which is wonderful because it means that it frees people to make ever-more of their time and powers of reason. The demand for labor (hence the wages for labor) increases with the accumulation of capital -- not the opposite. There is a line of economic thinkers who have elaborated on a pro-Capitalist view of economics, from Adam Smith to George Reisman via Jean-Baptiste Say, David Ricardo, Carl Menger, and Ludwig von Mises. It may help to read them.