No, because then everyone would have it
No, has nothing to do with it
It’s not, for most gamers (including EVE players) it works just fine.
It’s going to be something like that. For whatever reason some of the people who end up on the same “node” (which CAN come from different continents because it all gets funneled) get in trouble because that node is faulty or because the connection to/from that node is faulty. This is somewhere on that road (to keep the analogy going) but it’s not CCP or any node closest to them as it would then affect way more people.
Whatever it is, it’s NOT CCP’s doing, it’s not their fault and they have no way to fix it. All they can do is gather information from the different people affected, from that figure out which node they all go through that makes them drop to then pretty please ask the owner of that node to fix his stuff, which generally is met with a “go away” and then several weeks later (because they get more and more angry customers and get sick and tired of it) they fix it. Or it gets rerouted AROUND the problem.