Too much money to lose by doing that.
That's a rational, intelligent idea.
I don't think that Dan Didio and Bob Harras are rational, intelligent men. They're driven by ego and a desire for control. If they have the scripts, they can always get someone else to draw them. If they don't, they can always cancel the project entirely. When it comes time to show the bosses that they're profitable, money that they don't make because of a project that they don't publish won't factor into the books.
GI Joe Classic Vol 3 by Larry Hama, Mike Vosburg and company
The Mourner by Richard Stark