It's the single pin under everything because there are a limited number of those cables especially in some regions so a single shark can take out the entire internet for some countries.
There are many regions that are served by a single line, more than you think.
Even "well connected" places have fewer cables than you expect, and the frustrating thing is that you don't know that you can route around an issue until you try.
BGP is really resilient, which is great, but if your path is not clear then you'll only realise it when the failover doesn't happen, you'll think there's a redundant path.
This is never going to change because from a physical perspective free radio is a shared medium while each individual fiber (or wire) has its own private bandwidth.
For small island countries and such, satellite capacity may be sufficient; and it is likely helpful for keeping international calling alive even if it's not sufficient for international data. But when you drop capacity by a factor of 1000, it's going to be super messy.
[0] https://www.google.com/maps/d/viewer?mid=1805q6rlePY4WZd8QMO...
