Both have better networks and features though. Sometimes you get what you pay for.

Cloudflare is the Heroku of the CDN space. They are easy to setup, they give away free or cheap accounts to get people on their service. Once a company gets big and starts having real traffic they move off of Cloudflare to a better provider.

Akamai isn't competing with Cloudflare on price, much like The French Laundry isn't competing with McDonalds on price.