I can see how this can be quite successful. On the one hand, private interconnect from your DC to a nearby Cloudflare PoP can be cheaper per Mbps or Gbps of ban

I can see how this can be quite successful. On the one hand, private interconnect from your DC to a nearby Cloudflare PoP can be cheaper per Mbps or Gbps of bandwidth provisioned and hence can help reduce your overall network bandwidth costs. But on the other hand, you have to pay Cloudflare for their services and since they are bundling a lot of complex services they can justify charging a lot more than what a typical ISP's fees per Mbps of Internet would be. If they succeed in attracting a lot customers to ride on their private network across any geography, over time their network will have the same jitter performance issues like Internet. If they grow too big, then they would have effectively privatized large parts of the Internet. That cannot be good for anyone.