It's also easier to understand. For the internet to be fault tolerant you have to get rid of CDNs and assume everyone needs the same thing. That's more expensive than a centralized "internet" which relies on CDNs and fiber paths exclusive to the regions with most demand. Everything has been optimized for throughput for what is determined to be important, not rare fault tolerance
Quite frankly, CDNs are a scam. I will not elaborate because I don't feel like doing free labor for the folks who don't already understand this to their core.
