While platforms are multiplying across industries, the laws governing their dynamic are still poorly understood. The high diversity of disciplines covering the topic, spanning from strategy management to engineering design, made it difficult for any new model to integrate the numerous phenomena at stakes. In a new effort to bring them together, we exhibit Suh's Axiomatic Design as an ideal framework to systematically analyse platforms dynamics when market and technology forces meet and interact. Exporting the current description of platforms from Design Structure Matrices to Design Matrices, our research enables us to systematically explore platforms potential evolutions. While the model leads us to rediscover classical behaviours, it also uncovers new results, such as situations of split leadership and platform overthrow, in which complementors challenge the platform leader. Both can be linked to two necessary conditions: functional generativity and technical genericity. We then identify those behaviours in several cases.