the physical infrastructure of the local internet will be, yes, but the network infrastructure, in a globalized world, is not in that country. Think of how everything in the Western internet runs on AWS. If the US goes down, which is more likely than a global south country going down, this is gone, at least for a while. Also cloudflare. there are some backbones that are not part of these countries, which would be an argument for building a local internet infratructure, as some countries have had to do. (Iran, for instance, will be just fine.)
the physical infrastructure of the local internet will be, yes, but the network infrastructure, in a globalized world, is not in that country. Think of how everything in the Western internet runs on AWS. If the US goes down, which is more likely than a global south country going down, this is gone, at least for a while. Also cloudflare. there are some backbones that are not part of these countries, which would be an argument for building a local internet infratructure, as some countries have had to do. (Iran, for instance, will be just fine.)