HN is techy and entrepreneurial so most of the ideas presented so far suggest new technologies and business models.
Does this community know of the French New Wave -- http://en.wikipedia.org/wiki/French_new_wave?
It influenced Hollywood as much as any new technology and business model since WWII. IT created a new ways of looking at movies, created the role of director as author, decreased studios' power, and put creation in the hands of new people. Its influence continues today, though the studios regained their power after a generation. The movement was influenced by new technologies, so I don't mean to imply they are independent.
I hope people think about other ways of thinking about change than just technology and business plans.