Every writer and every artist in comics has a Captain Marvel character. It would be tempting to say it's because it's this big cash cow and you gotta have one to print money and all that crap, but I don't think that's true.
There are a few lists of Captain Marvel analogues around on the web, a couple of the best ones are outside the comics industry per se.
Even perhaps unlikely characters such as Thor have the same basic power of transformation- blast of energy: change of form. An alter ego in a flash of light.
This flash of light, particularly if it's yellow, pink or green, is associated in real life with some terribly serious medical conditions including tumours, schizophrenia, dissociative personality disorder and more. It's interesting beyond the obvious points that Phillip K. Dick was one experiencer of the pink light. It didn't turn him into Captain Marvel.
And a further tangent- Captain Marvel Jr. was the absolute favourite character of Elvis Presley.