For the past few years, Marvel has genuinely tried to make more progressive stories. However, last year, David Gabriel - Marvel's VP of Sales - blamed poor sales on diversity, which completely peeved a lot of people, mostly because it seemed like he was looking for a convenient scapegoat rather than looking at other factors, such as bad stories or event fatigue, both factors being especially egregious in Secret Empire.
A lot of these books were pushed for under the supervision of Axel Alonso, the previous Editor-in-Chief, while these books were cancelled following the promotion of the new Editor-in-Chief, C.B. Cebulski.
Marvel is also pretty lousy at promoting these books, and usually the decision to cancel certain books is made before people have the chance to buy them, as Marvel primarily cares about pre-orders put out by retailers. Marvel pays more attention to what the retailers are saying, rather than what the customers themselves are saying, so it's a game of telephone.
Basically, Marvel puts out books that they fail to promote, and usually decide to cancel anyway (Which then begs the question of why they even bother to put these books in the first place...), and then blame the customers.
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