The author keeps repeating this idea of a "dedicated internet connection" (DIA), and it kind of just irks me. Not because the author is wrong in how they use it, but because the term itself I find misleading, and I hate to see it continue to poison the common discourse.
A dedicated last-mile connection gives you a dedicated link to your ISP’s edge network, not a dedicated path across the internet. You won’t compete with your immediate neighbors on a shared access network anymore, sure, but you’re still sharing the ISP core, peering links, and transit links with the rest of their customers.
In practice this usually works well enough, because ISPs engineer their core and peering capacity with low over-subscription, especially for business and DIA customers. So you can often push near line rate anyway, but not because you have a truly reserved slice of the internet. A Switzerland-sized country would need like petabit-scale connectivity to provide actually dedicated 25G links (or even just 1G links) to everyone.
Very true. The bottleneck isn't going to be the last mile nearly all the time. In any case, it's clear we're arguing with a ragebait article and a bunch of others who have basically no understanding of how the Internet (or networks in general) works.
A dedicated last-mile connection gives you a dedicated link to your ISP’s edge network, not a dedicated path across the internet. You won’t compete with your immediate neighbors on a shared access network anymore, sure, but you’re still sharing the ISP core, peering links, and transit links with the rest of their customers.
In practice this usually works well enough, because ISPs engineer their core and peering capacity with low over-subscription, especially for business and DIA customers. So you can often push near line rate anyway, but not because you have a truly reserved slice of the internet. A Switzerland-sized country would need like petabit-scale connectivity to provide actually dedicated 25G links (or even just 1G links) to everyone.