In an ever-changing environment, firms must also  constantly change the way they do things in order to compete successfully. The  Spanish textile leaders of 1992 (in comparison to 1978) have altered their  organizational boundaries, favoring more complex and flexible structures,  outsourcing production and procurement activities -in order to decrease  production costs- and integrating their sales force and distribution channels  -in order to gain knowledge from their customers. Based on a study we conducted  using data from semi-structured interviews with twenty CEOs and secondary  sources within leading Spanish textile companies, we found that larger firms  adapted through learning whereas medium-size enterprises were subjected to  ecological selection.