Update thanks to thethatfox:
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.
Update 2: There is probably a difference in Game-key cards and card that contain real game data. So we don’t know right now how often these game-key cards are used or if nintendo is using them.
Thankfully I have so many games on my Switch that I am yet to finish or even start that I have absolutely zero desire to buy a Switch 2 and deal with this problem. Never been so grateful for my pile of shame lol
That’s what I said about PlayStation 1, and yet here we are…
On the bright side, your pile of shame is now so big that you can live in it and avoid buying a house!