They have no say so in a character that doesn't belong to them.
They can definitely put the squeeze on them publicly to do right by Chadwick. But they were likely paid off since it came out that they were "consulted" for the movie.
Because spider man is 30x bigger than fukking black panther brand.
90% of this board didn't even know about black panther and 90% of the cast on black panther didn't even fukking know about it until their agent put them on for the job.
Spider Man's brand is far bigger because it was allowed to flourish and get stronger over decades.
This garbage with Black Panther is like crushing a seedling before it grows up to be a tree. Deliberately.
Because of latent anti-Blackness from whites and anti-Black male bias from other Black men like Nate Moore and Coogler who honestly can't imagine black men in charge of anything because they're henpecked and submissive with their wives and women in their personal relationships.
Which led to the bizarre situation of T'Challa being portrayed better by two white guys (the Russo brothers) in Civil War and Infinity War than by a fellow Black man in Black Panther.