The current run of Match Game airs only in the summer and in January-February one day a week, so airing older episodes during the daytime hours on a regular basis wouldn't siphon viewers away from tuning into see the current run on ABC in primetime. Also, Buzzr actually cross-promotes the current Match Game on their social media and TV ad breaks. I think they even aired at least one 2016 episode during a recent marathon, to boot.
Because Price and Let's Make a Deal air in daytime on a more frequent basis, there is the risk that viewers would be enticed to see a Barker Price episode or a more recent Let's Make a Deal episode with Monty Hall rather than tune in and support the current shows.
Yep.
I’d also add despite their similarities, Match Game ‘73 and Match Game ‘19 appeal to very different audiences.
Outside the game show faithful, few know who Fanny Flagg or Brett Somers are—they’re famous because they appeared on Match Game. If you’re tuning in, it’s because you already know who those people are.
Match Game 2019 OTOH is more of a one-off “event”, with modern celebs, the sort that probably wouldn’t commit to several five-day-a-week takings.
Price and LMaD don’t get a boost from “celeb power” like Match Game or Pyramid. They rely on the variety of games and contestants to stay fresh.