...Yeah I'm not really seeing that.
Some of the most successful action/hack and slash games barely ever cross 5m in sales. Bayonetta 3, like 2, exists as a bonus for those dedicated fans, it's not gonna push a ton of systems by itself. Pokemon...yeeeeeah, Pokemon is gonna push millions of systems singlehandedly (or, I guess, dual-handedly since there'll be two sister games!). And those Pokemon sales will likely dive in on a Mario Kart, a Mario Odyssey, even maybe a Kirby.
Bayo keeps the most core of fans happy, the same kind of fans that are likely buying into the niche games anyway; Pokemon brings in MANY more casual fans that'll buy into the big, key games. That said, I'm very glad both exist on the same system!
You should check out my YouTube channel, The Golden Bolt! I review all types of video games, both classic and modern, and I also give short flyover reviews of the free games each month on PlayStation Plus to tell you if they're worth downloading. After all, the games may be free, but your time is valuable!