yeah, DC is the natural example and differences between the two companies have shrunk in recent years.
i'm not that familiar with the current bat fam, but i thought they all had their "thing" and green lanterns are at least a corp. that being said, if dc are managing it well, there's no reason marvel couldn't.
i don't know if it's a "rule" as such, though. to be fair, ben this criticism of ben and the supposed inability of him and peter to occupy the mainstage simultaneously has been a part of ben's existence in the meta since his return in the 90s.
maybe they just need to do the counter intuitive and embrace it?