> It is frightening how fragile the physical security of global networks appears to be.

Protecting miles and miles of cable running through the wilderness is an herculean task, especially since usually nobody attempts to attack it. One can of course do a three-way fallback of landline/direct radio link/satellite, but that would be insane cost for, again, basically no benefit and no bandwidth.

Two fiber lines is really the best thing you're going to get if you want good and fast internet speeds at reasonable prices.