Or might this mono-culture simply be a side effect of the internet? Much like how the Roman empire led to a linguistic "mono-culture", and how railways (and lat

Or might this mono-culture simply be a side effect of the internet? Much like how the Roman empire led to a linguistic "mono-culture", and how railways (and later airplanes) increased global homogeneity, it seems more likely to me that as humans are more and more in contact with their far away cousins, they all start to blend more.