

Physical game cards may also not actually contain the game:
Nintendo Switch 2 Game-Key Card Overview
Game-key cards are different from regular game cards, because they don’t contain the full game data. Instead, the game-key card is your “key” to downloading the full game to your system via the internet.
So you pay a premium and maybe don’t even get a “real” cartridge.
It looks good but an open world also doesn’t feel like Mario Kart to me.
Although at £75 I probably don’t need to worry anyway, that’s a stretch too far.