These barriers or obstacles might have a wide range of origins, and in its decisions, the Commission has been confronted with regulatory barriers or other forms of State intervention, constraints arising in downstream markets, need to incur specific capital investment or loss in current output in order to switch to alternative inputs, the location of customers, specific investment in production process, learning and human capital investment, retooling costs or other investments, uncertainty about quality and reputation of unknown suppliers, and others.
Te ovire ali prepreke imajo lahko širok spekter izvorov, in pri svojih odločitvah se Komisija sooča z regulatornimi omejitvami ali drugimi oblikami državnih intervencij, omejitvami, ki izvirajo iz prodajnih trgov v proizvodni ali distribucijski verigi proizvoda, potrebo po posebnih kapitalskih vlaganjih ali izgubah v sedanji proizvodnji zaradi prehoda na alternativne proizvodne dejavnike, lokacijo kupcev, posebnimi investicijskimi in proizvodnimi procesi, učenjem in vlaganjem v človeški kapital, stroški zamenjave proizvajalnih sredstev/opreme ali drugimi investicijami, negotovostjo glede kakovosti in ugleda nepoznanih dobaviteljev, in drugim.