> Digital borders exist all over the net. We use them every day to secure all sorts of things

Erm, how do you square these two sentences?

I took your first comment to be arguing against software security in general, presumably in favor of more post-facto enforcement when people violated authorization boundaries.

Your response then seemed to focus on mitigating the cross-jurisdictional issues that make post-facto enforcement hard, by having some sort of software-based security enforcement at a "border", and then relying on post-facto enforcement inside of that.

Now you seem to be supporting software-based security in the form of firewalls everywhere?

If we continue along this trend to even more local, we'll get to fewer firewalls (because they aren't that good of a technology), with security pushed out to the edges. Which is where best practices seem to be headed (BeyondCorp, etc), but is directly antithetical to your initial comment.