Every capitalist card game will eventually go this route if they don’t go under first.

Yeah, but so far to my knowledge of the big 3 (pokemon tcg, yugioh, and mtg), magic is the only ones going this hard into it.

Like yeah Yugioh would have the occasional cross promotion card, but it’s typically just a normal vanilla monster (aka, completely useless), and it’s also maybe just 1-3 cards at best that come with a monthly magazine sub. And even then all their stuff is largely references and homages, like there’s an archetype in YGO that’s a reference to both Wizard of Oz and OT Star Wars (Kozmo).

Pokemon tcg, also as far as my knowledge goes hasn’t done anything in terms of crossovers either.

If we get into long running smaller card games, there’s Redemption, which due to the theming of the whole card game (bible, yes, it’s a real tcg depicting stuff from the bible) makes it very naturally anti-crossover.