This extract of the Young Foundation's summary posits a very interesting approach to social innovation. In a very interesting way Mulgan links the innovation cycle to Schopenhauer's 3 stages model (ridiculed/opposed/self-evident). However in this case it seems to have started backwards. From the beginning the concept of social innovation has become self-evident and the supposed opposition has only generated attention and genuine interest across many different industries. This has yielded to stimulating collaborations and engaging projects between the bees (individuals) and the trees (organisations). 
More on the Young Foundation's postulate here.