Marvel's 1978 Work For Hire Agreements
Both sides were right. The creators who signed continued to draw a wage, and those who fought for more rights and ownership eventually got what they wanted in the form of creator owned comics and better deals. It's just that the bulk of those who fought were either financially stable, had contacts elsewhere (advertising and the like) or powerful enough to buck the trend. It was one thing for Neal Adams to stand his ground, God love him, but it was another for a Jim Mooney or a Mike Esposito to do the same - Jim and Mike didn't have the same clout as Neal. It was one thing for Neal to tell people to fight, some could and some couldn't. And for some, such as Mike, they'd been burnt once when they tried a similar thing, to form a union of artists, and as such they were reluctant to back such a move again. And during all of this the agreements were quietly signed, some with a bit of pressure from editors ("Hey, don't sign, no big deal, we have other artists waiting outside who want the work,") and some because they knew that it was a battle that they couldn't win.
That didn't make it right though, but it doesn't lessen any respect I have for anyone who did, or didn't, sign the agreements.