For several reasons, like:

• Standardization is necessary when professionalizing. By supporting the foundation the objective of standardization will be reached earlier, as a result of which the advantages can be experienced sooner;
• Being member of a knowledge network, through which experts can be contacted more directly;
• Taking your own responsibility: not only by taking profit from other members but also by sharing own knowledge, expertise and other means;
• Access to the people and organizations that are related to the foundation;
• Influencing the further development of the models.