One fascinating question is which country should be responsible for nationalizing them. According to the Snowden leaks, the US government is already more than happy to cooperate with FB and Google and alike to spy on non-US citizens; handing the private data to the US government bureaucracy appears to be not much of an improvement from a point of view of an EU citizen

Maybe these megaliths should be split according to the national boundaries, not unlike how the AT&T / Bell System was structured as a combination regional telephone companies.