The cliche "imitation is the sincerest form of flattery," has been paraphrased into the sarcastic comment that "imitation is the sincerest form of television," in reference to the medium's penchant for seeing every headline as a potential TV series, but in truth, imitation is really the sincerest form of comic books, because comics (and pulps such as All-Story Weekly) are notorious for latching onto anything and everything that's popular, and making it into a comic book.
For example, if mystery stories are hot, look for a slew of mystery inspired comic titles. If westerns top the charts, their popularity will soon be reflected in comic books featuring western characters such as Daniel Boone, and cowboy crooners Roy Rogers and Dale Evans. DC responded to the trend by giving each of these stars their very own comic book.
For example, the popularity of The Masked Rider lead to imitations, the most popular of which debuted in the August 9, 1919 issue of All-Story Weekly (cover pictured below) in a story called "The Curse of Capistrano" -- his name was Zorro!