The attacks would be a lot smaller and infrequent if cloudflare did not host them.

The reason why the DDoS market exploded is because you can now sell your services behind cloudflare for very little cost instead of competitors ddosing each other. You can see all the services being sold at hackforums.net.

Without a publicly assessable store front, you will not get funding.

Without funding you will not be able to rent servers to power reflection attacks and to process requests from hosts that turn a blind eye like ecatel.