Akamai has been around since 1998.
Cloudflare since 2009 (both according according to crunchbase which jives with the date the domain were registered iim).
Consequently the established company has more to lose and less to gain from the publicity then the newer company.
For a newer company any publicity is good publicity even if it's over a negative event because you have less to lose and more to gain add: and people become familiar with your name.
Taking this to an extreme example (to make a point) let's say you start a new hamburger restaurant. You have no customers. On day 5 some people get sick (just sick not deathly sick). All the sudden you are in the local paper with a headline and a story that people just skim but they see your name. Almost guaranteed you will pick up business from the mention. Even though it's bad PR all the sudden down the road people will remember you and either forget or not care about the negative story they read 6 mos. prior (add: assuming they even read the story and didn't just see the headline).