My point exactly. Playing a CFL team would have nothing in it for an NFL team, just as playing the college all-stars had nothing in it for the NFL. The game grew out of the time when college football was king, and it was a chance for the NFL to get exposure. By the '60s, that time was past.
The Packers loss to the college all-stars was made a bit easier for WI Packer fans, because the all-stars were lead by Badgers Ron Vander Kellen and Pat Richter and Packer to be Dave Robinson. It has also been said that the Jim Ringo trade a year later grew out of that game because Lombardi was very impressed by the play of Lee Roy Caffey in that game, and demanded that the Eagles give up Caffey for Ringo.