They aren't that uncommon outside of physical stores, where board game nerds gather - off the top of my head I can think of at least three similar multi-game decks: Everdeck [0], Badger Deck [1], and Singularity Deck [2], while a cursory search nets me another dozen or so [3].

There's also the Decktet [4], of course, even if it takes a very different approach than the rest (for one thing, it does away with traditional suits - it is a very interesting deck, and one I really like).

[0] https://www.drivethrucards.com/product/291492/The-Everdeck [1] https://www.drivethrucards.com/product/130446/The-Badger-Dec... [2] https://www.drivethrucards.com/product/189681/The-Singularit... [3] https://boardgamegeek.com/geeklist/252876/playing-card-game-... [4] https://www.decktet.com/