We often discuss the $$value proposition$$ as a key element of a company$$s marketing strategy. As consumers we are bombarded with value propositions daily. Much of marketing, however, takes place between organizational buyers and sellers $($B$2$B$,$ B$2$I, B$2$O$).$ Elaborate on how a seller$$s value proposition is affected by this seller$/$buyer context. What are the strategic ramifications of marketing in this environment?