Those are good points indeed, I didn't look at it that way before. Thanx.
replyEdit: You made me think, there are downsides indeed. But we still need to not be spied upon by the US, and we still don't need International Criminal Court judges have their email blocked in retaliation.
There are definitely up- and downsides. This is all much trickier than I think people realise, with complex second and third order effects. (Some that I haven't even mentioned. A more nationalised Internet will hurt smaller countries, for example, that cannot create services on par with US juggernauts. It will harm third countries that are neither the EU or the US. It will weaken the West's collective influence vis-à-vis China, Africa, etc.)
replyI don't know what the optimal course of action is.