Choosing the right theoretical lens. In order to answer the articulated research questions, this
dissertation will build on neo-institutional theory (Meyer and Rowan, 1977; DiMaggio and
Powell, 1983; Zucker, 1987; Scott, 1987b; DiMaggio and Powell, 1991). We will refer to the
institutional environment, its generation and mode of action. Hereby, we use regulative, nor-
mative, and cognitive institutions (Scott, 1995) to explain the influence of regulatory actors
on strategy formation.