[agemame]

Although that argument falls down when it comes to Bullseye, though I suspect it the seeds were sown for that for the Gameshow Marathon years earlier.

Bullseye is an interesting one, while Andrew Wood Enterprises seems to own the format (with the estate of Norman Vaughn as silent partners), the various treatments of it were done through independents of the time, namely Chatsworth and Talbot depending on the series.
In terms of deals here, they've always been happy to roll it out, as it helps the merchandise of AR dartboards and the like, so I can't imagine it's much of a struggle year on year.