It generally comes down to your editors and what they allow.
As Leah and Vita and even other writers will gladly you tell-there are folks who want to writer "X".
They get shot down. Their pitches do not get listen to and many of those pitches become books elsewhere. The last Wasp title was originally pitched as a Bumblebee (DC character) book.
Then you see the mess with Black Panther-you HIRE writers who do not care for the character. Who OPENLY state that.
Don't think there are NOT folks who want to write these characters. They are out there.