Thoughts about collective memory and “clouds” or Are our memories going global?

taking care

Very often, when working in multicultural teams or simply being at an international conference, I have observed that people tend to form sub-groups with others from the same nationality. I always wondered where this might be coming from. Well according to scientific views on intercultural communication, the reason for this does not have to be the language alone but the fact, that because of comparable socialization and education processes, common routines or norms are given, meaning that the context of things doesn’t need to be explained. Other people in the group have more or less the same ‘cultural background’ and behaviours are easily handled without a lot of explanation.
We also do have something called the “collective memory” which is: “(…)the shared pool of information held in the memories of two or more members of a group.” Following these thoughts, it doesn’t surprise anymore that communication between members of a group where people have a similar upbringing, is usually much more ‘noisefree’ than intercultural communication.
But: have you ever thought about what will happen to the collective memory now that we have global “clouds” available where huge amounts of data from anywhere in the world are saved and shared? Are we truly going to become “global citizens” in a couple of generations or are our national/cultural roots affirm themselves? What do you think?