House of X / Powers of X reveal

[salarta]

Or, alternatively, the editor is mad at him for going to DC to write Superman, so decides to explode everything he built in an event designed to relegate X-men to second-rate status.

Did that really happen after Bendis left? Or do you just assume? (The reasons for the crappy event that is, not the crappy event itself!)

No, that was after Morrison. House of M was Quesada's revenge.

Something to add that's not really reflective of Marvel, but of general bad corporate behavior.

Video game companies are rife with this. Keiji Inafune was with Capcom for 23 years. The company tried to incentivize him staying by greenlighting several Mega Man projects, all of which they were very quick to cancel once he left. This included Mega Man Legends 3, a game that people had been wanting for nearly a decade. After Inafune left, first they planned on making people pay to play the demo, then after backlash, they canceled the project entirely under the excuse that there wasn't enough fan interest.

Similarly, when Hideo Kojima and Konami had their falling out, Konami did multiple things. They took Kojima Productions credits off of Metal Gear Solid 5. They took P.T. off of Playstation Network - P.T. being a highly regarded "Playable Trailer" and tease for Silent Hills that Kojima and del Toro were going to be making. There was also stuff like their trying to stop Kojiima from accepting an award for MGS5.

These examples come from a different industry, but the same strokes easily apply to any other company similarly structured, in this case Marvel.