Director Osamu Dezaki started a revolution at Tokyo Movie in the 70s, according to this 1997 interview on The Adventures of Gamba.
"When the production for Tomorrow’s Joe 2 was confirmed, we pleaded with the company president to let us just focus on Tomorrow’s Joe 2 instead of working on two shows in parallel. We wanted to do it justice. But we were told it would be a waste of resources from a business perspective. That rejection caused a rift, and I left with Dezaki to form a new company."
"I barely got published in two [gekiga] magazine volumes. I have those volumes stored away. No one has seen them. (Osamu) Dezaki was under the impression that none of my submissions got picked up for publication, but I proudly informed him otherwise."