>>715284165
>are they just cartridges that allow you to download the game?
Yes
>Can you resell or let someone borrow the cartridge no problem?
Yes
Switch 1 had like 40% of physical games release as a code in a box. This was supposed to solve the issue, but we're still getting download codes because the EU doesn't see anything wrong with it and probably because lobbyists worked hard to keep it going for the game companies that pay their salaries.