I don't follow this at all. The open interconnection of the internet still works no matter what Cloudflare does. My users can still get to my site. When they no longer can because of Cloudflare I can easily drop them and/or switch to an alternative. Cloudflare is literally not capable of preventing people from reaching my site unless they ask me to. The minute they cause a problem I can drop them. There is no shared commons problem or monopoly problem here.