Ken schwaber and mike beedle started scrum because they were suffocated by surrounding non value adding processes and structures. Their key intent was to make something simple, as close as possible to the natural way of doing things, which protects the pigs from the chickens, and it prospered. Lot of people joined hands with them and the scrum alliance happened. Then they decided to teach the rest of the world how to scrum through certifications, and a chosen few tried to monopolise it. The founders got chucked out and they started scrum.org and launched their own certifications. Now pmi has joined the bandwagon. Soon pmriworld, also will join the group. Sometimes one get a feeling that the scrum leadership also follow the scrum team size of seven. Whenever it goes beyond it, it splits.