There’s no way an American comic about pirates would ever crack number one on the Diamond sales chart. Decades of conditioning have made it impossible for American comic fans to deviate from capes and tights.
At certain points in history, that would be true. Today it would not be true. There are days I want to start jumping back into collecting/reading more comics, but for now I just dip my toe into chasing down the 10001 variant cover for Dynamite’s Shadow releases and an occasional used graphic novel. But from what I have seen, the subject matter of comics is very diverse in the modern era. Heck I would be a bit critical of Manga as being overly formulaic in general, but that isn’t fair for all of them.
ETA - The advantage nearly every other country has with comics media is it was allowed to mature with the rest of society. So there were comics for “adults” much earlier in their history than in the US, which really started to be a mainstream thing in the mid-late 80s. But I do feel the US comics industry has largely caught up.
