I suspect Cloudflare and any clones could set up their peering agreements with Cloud providers in such a way that they're exposed as a feature. First tier Cloud providers probably won't bite because it would open the door to people migrating out of their data centers.

Second tier Cloud providers would eat that up, since it would democratize things more. Even if a competitor gets the customer, at least it's not the guy who is waging a war of attrition against you.