IMHO one big challenge is missing from the list: He needs to convince the non-US world that a centralised cloud (and internet of things) is a good idea. I can s

IMHO one big challenge is missing from the list: He needs to convince the non-US world that a centralised cloud (and internet of things) is a good idea. I can see how that'll work for consumers who need to sync their contacts, but will e.g. foreign governments move from classic Microsoft to Office 365 anytime soon? Does anyone have data on this?