There are alternatives. Akamai has a similar product. It's not free, but it works. Also doesn't require all traffic to go through them all the time, you can repoint your traffic at them on the fly and have them mitigate by scrubbing the unwanted traffic until the attack ends and then switch back, and this can be automated. My ISP at work uses this as they have large swaths of public IP address space to protect for vulnerable members.

Well, it’s not without evidence I mean without providing evidence. Dr. Moose said that Cloudflare abuses their market power without showing anything. I think we should do better than that. If you think that someone is doing a bad thing you can either refer back to the article that you read it from or at least google something that supports your claim. I don't like being a part of a community that just believes things because they sound real.

Honestly, if anything, Cloudflare uses their power too little. Where they allow just about anyone to use their services unless they get a complaint from the government. You can read here about how they don't shut down websites from their services unless they are breaking the law. I would assume that abusing market power is something like disallowing services because they criticize Cloudflare or some other arbitrary reason. I think that a good example of abusing your market share is Amazon where they forced merchants to keep their prices on other stores higher. But don't take my word for it, you can read all about it here.