Modernity = Homogeneity?

If modernity is the great white-washing of societies (think mass-media) then I agree that Islam's zealots would be hard pressed to continue their fundamentalist and violent rhetoric forever. As the world looses languages and cultural idiosyncrasies to McDonald and Murdochization, the power of niche agendas seems to diminish. We think alike, talk alike, behave alike and obey a larger shared ideology (human rights, free trade) to a greater degree now than ever. This should put downward pressure on fanaticism. This, however, is a long-term trend and one that will not readily eradicate UBL's in our lifetime.