I also recall a lesser-known aspect of the Silver Age's demise being a group of Silver Age creators such as Gardner Fox, John Broome, Jim Mooney and others, voicing a collective appeal to DC for better pay and benefits, and quietly being pushed out and replaced by incoming talent like Dick Giordano, Dennis O'Neil, Mike Friedrich, and others. There wasn't any discussion of it, the names just changed.
A few years later in 1971-1974, Carmine Infantino, as he detailed in the book THE AMAZING WORLD OF CARMINE INFANTINO, said that when the ACBA (Academy of Comic Book Arts) formed, one of the possibilities was an organized strike of writers and artists. And that was part of the reason for bringing in so many Phillipine artists to DC, to create a potential reservoir of backup talent to do the work should the regulars strike. And the visibility of this to DC staffers, possibly a deterrant to such a possible strike.
