You'll soon be able to share your Nintendo Switch digital games, but there's a catch
Took Nintendo long enough.

Even if you have multiple Nintendo Switches at home, sharing digital games has always been a no-go. While you can easily pop a physical game cartridge out of one Switch and into another, digital games don’t offer anywhere near that kind of flexibility. Your only options have been to either use the same Nintendo Account or buy another copy. Thanks a lot, Nintendo.