The fact that Goodson didn't have a syndication arm during that time may have played a role.
When I was there, Jerry Chester handled all of that, relying on established syndicators such as Jim Victory. With the exception of Concentration, it is ironic because of what I call "one-stop shopping". All Jerry had to do was sell a show to one station group and it was a "go" in syndication. He had one sale to make to get Match Game on the ABC-owned stations and yes, an ABC S&P rep would attend all tapings of MG PM.
I was told Goodson fairly had to be dragged into syndicating his shows. All he knew was the networks, but He Said, She Said tided the company over in the late '60's. The current version of TPIR was intended for syndication to the NBC stations until Bud Grant at CBS got wind of it. And oh yes, there were syndicated color versions of WML? and Password in the late '60's.
Jerry Chester could have made the sale directly without involving an outside syndicator, keeping the money in the company. All Goodson would have to do is hire some people to make sure the tapes got duplicated and bicycled. Had he been clever he would have sold some barter spots in the shows which Bob Stewart did but AFAIK Goodson never did.
At some point Harris Katleman rejoined the company and may have branched out beyond broadcast, i.e. the networks and the traditional syndication route, seeing this library of rerunnable shows and the emergence of cable.