“…Increased variety due to new products may intensify the division of labor, as well as follow-up innovation, and, therefore, may generate significant economic development (Boschma, 2004;Saviotti and Pyka, 2004). Greater variety may have the further effect of diversifying the regional industry structure and the respective knowledge base, thus making the region more resilient to external shocks (Boschma and Frenken, 2011 (Caves, 1998;Disney, Haskell, and Heden, 2003;Mueller, 2004, 2008;Fritsch and Noseleit, 2012b) If, however, market selection is not working as it should and allows the survival of relatively unproductive competitors, the economy's competitiveness will decline and there may be negative supply-side effects.…”