Since I have never asked to have a closed economy, I’ll let you conduct that argument with yourself.
If I did that, I'd be a protectionist . . . China, sevice jobs, wages and all, so no thanks. Here's a protip for you, though: the word "appears" means just that, and it is a signal that someone is asking for an elaboration. So when someone says that "it appears" that your argument has strayed, think of it as an invitation to bring it back on-track.