I don't know. I'm fully digital aside from my copy of Zelda but I hear lots of physical games are actually only part physical and you have to download the rest.
There are some, but I've only bought 2 so far, so in a year and a half of owning a Switch I have used less than 20GB of SD card space.
Bet with Liquidlaser: I say PS5 and Xbox Series will sell more than 56 million combined by the end of 2023. (And over 130 million lifetime)