(33)A separation of scheme and infrastructure should allow all processors to compete for customers of the schemes. As the cost of processing is a significant part of the total cost of card acceptance, it is important for this part of the value chain to be opened to effective competition. On the basis of the separation of scheme and infrastructure, card schemes and processing entities should be independent in terms of accounting, organisation and decision-making process. They should not discriminate, for instance by providing each other with preferential treatment or privileged information which is not available to their competitors on their respective market segment, imposing excessive information requirements on their competitor in their respective market segment, cross-subsidising their respective activities or having shared governance arrangements. Such discriminatory practises contribute to market fragmentation, negatively impact market entry by new players and prevent pan-Union players from emerging, hence hindering the completion of the internal market in the area of card-based payments and internet and mobile payments based on cards, to the detriment of merchants, companies and consumers.